Bosch dishwasher error codes

Speaking about display dishwasher models, the error codes of Bosch ones are generally standardized. But in the previous era, when indicators (LEDs) displayed errors, decipherment was much more complicated for users.

In fact, there was no notion of an error code in devices without displays: a particular combination of burning or flashing indicators corresponded to a problem. Although the set of errors was also the same, devices had many options for displaying them.

Each modern Bosch dishwasher model is equipped with self-diagnosis system. Actually, a user does not know about this system while the device works properly. However, when a breakdown occurs, the error codes of Bosch dishwashers appear on the display. Depending on the failure, these errors can appear alternately, or only one specific error lights up on the screen. In any case, to solve the problem, you have to decode the error.

In order not to repeat the description of the same error codes, they will be fully described only in the first code table for display dishwashers. All subsequent ones will refer to it since the set of codes for modern Bosch dishwashers is extensive enough to cover all previous versions.

Note! In some Bosch dishwasher models, F replaces the E letter in the error code, and the number remains the same.

Examples of control panels with display

Control panels with indicators

Error codes for Bosch display dishwashers

Error codes are shown in alphanumeric format E <code> on Bosch dishwashers screen; At the same time, some models display the prefix “E” instead of the “F” one. Search for codes with both prefixes in the table below. Besides that, we decided to turn on the error message in dishwashers without a display. Thus, in the normal operation mode of the device, a Tap indicator blinks or lights if some problem appears. To clarify the error, switch to the diagnostic mode.

Even modern Bosch dishwasher models don’t display all error codes in the normal operating mode. The full set of them is available only in the service (test or diagnostic) mode, launched by a particular combination of buttons on the control panel. We’ll explain how to enter service mode in the next section.

Unfortunately, there is no single standard in the Bosch dishwasher error code system. We know a few code sets. In order not to litter the page by repeating the description of the same errors, I collected all the possible error codes. I will indicate if the same code means different errors. Please note that the E01 and E1 (without zero) codes mean different errors.

Water heating failure of a Bosch dishwasher

The first group of system errors is “water heating failure”. This group includes the following codes:

Heat doesn’t turn on due to sensor or electronics error

The heating element contacts are damaged or the integrity of the device is crippled. If the error E1 appears on the display, there is a high probability that the heating element has burnt. In this case, replacement is required. Anyway, start the test with the heating element. The temperature sensor must be checked as well as the heating element.

Other possible causes

One of the sensors is faulty. The problem may relate to temperature sensor (thermistor) or water level sensor (pressure switch): diagnostics and replacement
There is too much water in the tank (it might happen due to a faulty level sensor)
Temperature sensor doesn’t work correctly (thermostat): replacement
Breakage in the control circuit of the heating element: check the loop, tighten the contacts and repair the wiring
A short circuit inside the heating element, leakage to the body
Heating element burnt out: only replacement will help
Master controller malfunction: change the part

There are problems with water heating due to a faulty NTC temperature sensor.

System error E2 can appear alternately with the E1 error code. It indicates a malfunction of the water temperature sensor. In this case, the heating element operates at full power all the time, since the information does not come from the temperature sensor. To verify the malfunction cause, it is necessary to measure the resistance of the temperature sensor contacts using a multimeter (it should be approximately 50 kΩ).

As a result, the water temperature in the tank will differ from the set one. It will affect the quality of the wash:

First, make sure that the wiring between the sensor or the heating element and the master controller is in order. Check whether all contacts and connectors are securely fastened
The absence of a signal from the sensor may indicate its malfunction: replace a faulty sensor
Problems in the master controller: provide professional diagnostics and controller replacement

Breakage in a chain of a heating element

This code indicates problems with a direct flow water heater. The E09 error pops up in particular dishwasher models, where the heating element is located in a circulation pump. The problem can be solved by replacing the heating element, but first, you have to diagnose the device using a multimeter and make sure that it is broken.

The circuit of the heating element is open; there is no signal from the heater

There is a wire breakage or a detached contact in a circuit of the Heating element
The Heating element has burnt out
The relay installed on the electronic board has failed. The device controls the operation of the heating element.

E10 error. Cause: Heating element problem. Action: Check for blockages/build-up/limescale that could be stopping water from interacting with the element properly.

The temperature sensor (thermistor) is faulty

The error E11 indicates that the power is not being supplied to the thermal sensor, or the connection between the control module and the temperature sensor is broken. The failure also indicates an impressive list of reasons, so you had better check it one by one:

temperature sensor contacts;
wiring leading from the temperature sensor to the damaged place;

Either there is no signal from the sensor at all, or it shows incorrect data:

There are violations in the sensor circuit wiring: check the loop and repair the circuit, fix the contacts
Thermistor malfunction: thermistor diagnostics and replacement
Control board failure

This code is displayed on some Bosch dishwasher models in the case if there is too much scale or dirt accumulated on the heating element. Sometimes after restarting the dishwasher, the E09 error appears instead of the E12 error, but it indicates the same problem.

Dishwashing machine doesn't dry properly because of the deposition covering the heating element

A thick layer of limescale has accumulated on the heater. It is why the part can't cope with dishes drying.

Important! Some dishwashers are equipped with a particular heating element that can be removed, cleaned, and then installed again. After such fixing, the device will work properly.

Water drainage and water gaining failures of the Bosch dishwasher

Malfunctions related to the water heating are considered to be quite rare, but the error codes that report problems of water draining and gaining can be found more often. Let’s list the codes that inform about similar faults.

Water gaining problem: an appliance doesn't fill the tank for the required period of time

E3 failure stops the dishwasher operation if the appliance could not gain water in a specified period of time. In this case, the modern Bosch models automatically drain water, and then the E3 error appears on the display. If the Bosch dishwasher model was released 7-10 years ago, the situation can be different: the kitchen appliance shows the error code, and then waits for the end of the water gaining. What can be done in this case?

Check water supply system for water.
Check the filters for clogging. It is installed in front of the filling hose at the dishwasher entrance.
Check the fill valve for a condition.
Check the water level sensor for functioning.
Lastly, check the pump for working, because in rare cases such error is caused by the pump failure.

Depending on the model, the dishwasher will wait until the water completely fills the tank (as it was in the early models). In some cases, washing will stop in a minute (it's a more reasonable solution in modern dishwasher models)

Water doesn’t enter a dishwashing machine: the water supply valve is shut off, the water pressure in the pipeline is weak, the hose is defective or obstructed, the inlet valve is blocked, etc. - You can solve all of these problems yourself
User forgot to close the door tightly. So, the electronics prevent the start of the washing program
The input solenoid valve is out of order: replace the part
Faulty water level sensor (pressure switch): diagnostics, followed by replacement
Open circuit or wired contacts in the circuits leading from the master controller to the inlet valve or pressure switch
Controller failure: if the board is faulty, a dishwasher requires professional diagnostics and replacement

There is too much water in the dishwasher: it doesn’t drain; leakage is detected.

The dishwasher reservoir is full of water. E5 error occurs when the dishwasher gains more water than necessary, and the water level sensor cannot stop this process in time. So, there are problems with the water level sensor. To eliminate the problem, you have to:

check the water level sensor tube for dirt and clogging;
check the contacts and wiring related to the sensor for burning;
check filling valve for any damages. Perhaps, for some reason, it can’t be blocked completely, and water continues to enter the dishwasher.

A pressure sensor or a float indicate an overflow of the appliance: usually, the cause is a blockage or a malfunction of water supply path:

Open circuit in the pressure switch: fix the wires and secure the contacts
The pressure switch is faulty: check and replace it
Fill valve fails, so water continuously enters the machine due to the problem: test and replace
Electronics failure: this one explains almost any problem

Important! In rare cases, such fault is caused by a malfunction in the dishwasher control unit. In this case, the help of a specialist is required.

Heating doesn't work due to the low water level in the tank

E08 error is similar to another one – E03. The reason is the same – the dishwasher can’t gain the right amount of water on the pallet. This leads to the fact that the circulation pump cannot turn on and function properly, as well as the heating element.

Electronics doesn't allow heating. It happens because the circulation pump has found that there is too little water in its helix.

Water gaining problem: see the description of the E3 error code
Self-draining of water due to leakage or incorrectly installed drain is not excluded:

Too hot water enters a dishwashing machine. E13 Error. Symptom: Water temperature exceeding 75C.

Action: Have you connected your dishwasher to a hot water supply? If so switch to cold.

The error occurs when the dishwasher is connected to a hot water tap. Therefore, the device gains water with a temperature above 75 degrees

The thermal sensor is faulty: check the description of the E11 error code
If you can't control the temperature of the water poured into the appliance, there is a radical solution. Connect a dishwasher to a cold water tap. Besides, this method has many advantages.

One of the valves or sensors is leaking.

Error E16 occur if the dishwasher cannot block the entering of water into the tank. There is an uncontrolled self-pouring of water into the appliance. Most often, the failure occurs if a clog entered an inlet valve with water and stuck there. It does not allow to the valve to close, so water constantly percolates through it, even if the dishwasher is turned off. So what to do to eliminate the E16 error?

Check the fill valve for clogging and clean it.
Check the water level sensor (only if the water does not flow by gravity when the machine is turned off).
Check if there is excess foam from the detergent (if the error occurred during the dishwashing process).

The appliance has detected leakage in the filler valve or the flow sensor (water meter): this can lead to spontaneous water gaining.

It is necessary to carefully examine all the sensors and valves (look at the device scheme in the instructions): if you notice a leak somewhere, it’s better to replace the problem part to avoid troubles
The water level sensor (pressure switch) has some bugs: replace the part
Too rapid formation of foam in the tank is the possible reason for damage, too

Too much water pressure or overflow

E17 Error indicates problems related to water gaining. This error is narrow-profile and most often means that the inlet valve overlaps are hindered or cannot be blocked at all due to an excessive water pressure. Sometimes a similar error can occur due to a water-hammer effect. In this case, just restart the device and it will work fine. If the pressure in the water pipe is too high all the time, partially shut off the water supply on the riser pipes.

The inlet valve is difficult to close due to the excessively high pressure of the entering water. As a result, your dishwashing machine may get too much water poured into the tank.

Contact a plumber: ask the specialist to check and reduce the pressure in the water supply
You can cover the water supply a little bit that comes to your dishwasher
Faulty inlet valve: replacement
Level sensor malfunction: change it

Please note! In rare cases, when the E17 error appears, it is necessary to check the sensor that measures the amount of supplied water.

Too little water in the tank

E18 Error. Symptom: Water level too low (underfill). Cause: Can be due to a problematic water valve.

Washing process doesn't stop, although its quality is unlikely to be good. Most of all, there is a problem with the filling valve, but other reasons might spoil the work, too: read the description of E3 and E14 error codes

E19 Error. Dispenser fault End of program Dispenser defective Check component Wires interrupted/broken Check wires

Circulation pump blockage

E21 Error appears on the display if there are problems with the dishwasher’s pump and it refuses to drain water. When the error occurs, the pump is powered and it reacts with the control unit and sensors properly but does not perform its function.

Read the description of the E20 error code, mentioned previously. In addition, the pump may not work due to low water pressure: check the E3 error code explanation

What could have happened?

The impeller has been jammed, and it does not rotate (possibly it was caused by foreign objects wounded around it);
The rotor has stuck to the sleeve walls. It needs to be cleaned and greased (in this case, the E21 may trench upon the E22 error code);
The pump mechanism has worn out and needs to be changed.

Errors with clogging of the Bosch dishwasher

Errors related to a number of different types of clogging are found in Bosch dishwashers most often. Usually, blockages occur if the user neglects to clean dishes from food debris before putting it in the wash baskets. What systemic errors are related to the clogging?

The decoding of the code sounds like “a hole for water draining is blocked“. What does it mean? The dishes are not placed properly in the wash baskets, some of the objects covered the hole through which water is pumped from the dishwasher bunker. Also, the hole can be clogged with dirt.

Water doesn't drain due to clogging of the drain path. In some cases, the drain pump doesn't work.

This error indicates that one of the dishwasher filters is dirty or there are problems with the pump (if the rotation of an impeller is hindered).

There are many causes for draining obstacles:

Defect or obstruction of the drain hose, air bubbles could form in the hose: carefully inspect the hose, disconnect it and clean
Blockage in the pan
Drain filter clogging: you can clean it yourself
Incorrect drain connection - see the installation instructions for your dishwashing machine
There is a clog in a drain pump or a lot of dirt accumulated on its blades: try cleaning the part
Drain pump problems: leakage or breakage - contact the service center
An open circuit in the power supply of the pump or pressure switch: check the loop, repair the wires and fasten the contacts
The pressure switch breakage: check and replace it
Electronics failure: contact the service center

F24 failure has a simple and understandable deciphering – the drain hose is bent or clogged, the sewerage and the drain outlet of the siphon are blocked. But in fact, the E24 error can occur for the most unexpected reasons. By the way, it may easily coexist with the E22 breakage.

Water draining problem caused by a drainage pump

This error occurs when the pump nozzle or drain hose is clogged at the base. Therefore, the power of the drain pump is not enough. In order to squirt the dirty water, sensors signal to the control unit that shows the E25 error code and stops the dishwasher. To eliminate the problem, you have to clean the branch pipe and drain hose from the blockages and check the pump impeller.

A blockage in the drain path, the drain pump clogging or incorrect installation of its lid: see the description of E22 error to find out more details

Pay attention! Sometimes the E25 error boarders with the E22 one, that is, when the machine is rebooted, these failures occur alternately. In this case, it is necessary to check the impeller for rotations.

Errors related to sensors and water switches in the Bosch dishwasher

The Bosch dishwasher is provided with a sufficiently large number of different sensors that help to control and operate the processes of implementing washing programs. When these sensors fail, the self-diagnosis system detects this and displays the following errors on the Bosch dishwasher display:

The sprinkler is not working properly

This error means that the sensor controlling the pressure and flow of water that is supplied to the sprinkler does not fulfill its functions. It is defective or just cannot work properly due to the clogging. It often happens that hard water causes clogging in the spray nozzles, and the water can’t enter through the damaged area, which leads to the E4 errors.

There is a problem with the flow sensor (switch): it is set in the wrong position, but other reasons can cause the error:

Tableware in the chamber blocks the rotation of the spray
Damage to the flow sensor circuit
Flow sensor breakage or clogging: clean the part or replace it if cleaning doesn't help
Something has happened to the motor that changes the position of the sensor.
Master controller malfunction

There is breakage of a water sensor that controls water quality (hardness, pollution, turbidity) during rinsing

The water quality sensor has failed. This is a special sensor that monitors the water quality in the dishwasher, which is installed next to the heating element. Sometimes it is possible to give the device a second life, changing burnt contacts, but in 95% of cases, replacement is required.

Washing continues on the assumption of heavy pollution.

Clean the dishwasher chamber
Open sensor circuit: check and repair wiring, fix contacts
The sensor is faulty: only replacement will solve the problem
Master controller malfunctions: applying to a specialist is inevitable

No door locking signal

As a result, the electronics block the start of washing. Possible reasons for this:

Interruption of the connection between the triac control door sensor and a master controller: check the loop and examine the contacts
Something broke in the door lock: most of all, you can fix the lock yourself
Faulty door closing sensor: replacement
Master controller problems: diagnostics and replacement

Drying fan breakage

Open fan control circuit: check circuit and contacts
Faulty fan sensor: replacement
Something broke inside the fan: replace the part
Master controller problems: diagnostics and replacement

Water flow sensor (reed switch) is faulty.

The sensor that controls the amount of water entering the dishwasher is not working properly. This malfunction can be fixed only by a specialist, and perhaps, the sensor requires replacement.

When there is no signal from the water inlet sensor, while the circulating pump works as usual, the electronics block the sink. It happens when there is no possibility to control the process of filling the tank with water. Problems with the sensor imply standard actions: check the wiring and contacts, the sensor and the master controller.

Tank water leakage, overflow

E15 error appears in modern dishwashers equipped with the Aqua stop system if there is a water leakage. Act according to the following recommendations:

check the dishwasher tray for leaks;
check the hoses;
check other components for leaks.

Aqua-Stop, the float of the leakage control system, has been activated. It indicates that water has got inside the pan.

Water flows into the pan. It is necessary to turn off the water and carefully examine all the places of leakage: the body, hoses and their connections, etc.
The drain pump is leaking: most of all, it is not subject to repair, and only replacement will help.
The sensor for monitoring the water leakage or the circuit of the device is faulty: it is necessary to check all the wiring and contacts from the sensor to the control board. Applying to specialists is the best decision.
An error may appear after replacing the electronic control module: in this case, restarting the dishwasher will help.

Cause: Water switch/regulator problem.

Action: Check water switch and replace if required.

Cause: Fault detected with turbidity sensor.

Symptom: Dishes not getting clean. Dirty water in the tub.

Errors related to an electrician in a Bosch dishwasher

Due to a large number of sensors, a modern dishwasher is provided with a complicated electrician system. The slight burning of a terminal or wipe of one of the numerous wiring lead to the following errors:

These errors indicate a failure in the electrical or in the dishwasher electronic system. First of all, the kitchen appliance has to be restarted by “on/off” buttons. As a rule, after this, the error is eliminated. If the breakage repeats many times, in order to avoid the occurrence of new problems, you need to turn off the device and call a specialist.

Dishwasher control unit is out of order

First, check the mains voltage: if it is obviously too low or high, apply to an electrician
Check the wires leading to the electronic boards for open or short circuit. Make sure that all the connectors on the boards are set up tight in the sockets

Important! You can try to find the cause of the problem by yourself, but in this case, you have to check all the wiring and terminals. To say the truth, this is a scrupulous and unpleasant work and there is no guarantee that you will find a malfunction.

No heating due to the electronics issues

Other possible causes

Most likely, something happened to the Heating element relay that controls the heater function

Breakage of a wire or a detached contact in a circuit of the Heating element
The relay of the heating element, installed on the electronic board, failed: replace the board

Additional drying mode doesn't work due to electronics failure

There is a problem with the relay of an additional heating element which controls the operation of the heater

Breakage of a wire or a detached contact in a circuit of a heating element
Relay of a heating element, placed on the electronic board, failed: replace the board

Breakdown of the circulation pump, which supplies water for washing under the pressure

Cause: Short or break causing incorrect resistance in winding of the circulation pump or the motor.

The control module has fixed abnormal electrical or electronic circuit of the pump motor

Open circuit in the motor of the pump: check the wiring, tighten the contacts, fasten the connectors on the board
There are foreign objects got on the pump blades that block it.
Tachogenerator failure: replace the element
The motor capacitor is out of order: change it, too
The pump is faulty: diagnostics is required; repair is possible, but often it doesn't help - contact the service center

Drain pump breakage

As error code E20, but this time the electrical problem is with the drain pump.

The control module has fixed abnormal electrical or electronic circuit of the pump motor

Open circuit in the motor pump: check the wiring, tighten the contacts, fasten the connectors on the board
There are foreign objects in the pump blades which block the part.
Tachogenerator is out of order: replace it
The pump has failed: repair after diagnostics is possible, but it helps rarely - contact the service center

Mains voltage is too low

If you connect the dishwasher directly to the mains, you may face the E27 error. Voltage drops that periodically occur in the network can have a serious negative impact on electrical appliances. It can even break the device at all. Therefore, if your dishwasher’s screen often shows the E27 error, connect the device to the network via a voltage regulator and the problem will be solved.

Apply to an electrician to check and repair electrical wiring. If it doesn't help, there are problems inside the device. In this case, you will have to contact the service center. Also, in the article, you can read about the possible problems related to the dishwasher power supply.

Software error

It states about dishwasher system failure or control module error. If the reload of a dishwashing machine doesn't help, you need to call a specialist to diagnose the problem.

Error codes for Bosch dishwasher without display

It is impossible to find out the error code for non-display Bosch dishwashers that work in normal mode. If something happens, the Tap indicator starts flashing (see error codes above). To get error codes for such models, switch to the service mode (so-called the diagnostic test).

Next, I will describe the service tests for some non-display Bosch dishwashers (and also for some models with a screen). First, you’ll see a general table of key combinations for switching to a diagnostic test on different Bosch dishwasher models. Then, I’ll indicate details with examples for particular models. And finally, you’ll get the rules for displaying error codes on dishwashers.

Switching to service test in Bosch dishwashers

Since the names of buttons on the control panels of different Bosch dishwasher models may vary, I made a table. There are the buttons used to put the dishwasher in test mode.

To enter the test mode, press and hold the buttons listed in the table (2nd and 4th from the left). Then, turn on the machine by pressing the on/off button. Press the specified buttons again to start the test program. Wait for the program to finish and display the error code. To exit the test mode, turn off the dishwasher.

To activate test mode in the fully built models, you have to open the door and close it to test.

The list of models is far from complete in the tables. But the general principles are valid for almost all Bosch dishwasher models. I will describe some of the features a little further. In particular, I will tell you how to run a test program in non-button dishwashers, equipped only with a handle for the washing program selector.

Bosch Dishwasher Models	Buttons to launch a test program
SHU/SHI430x, SHU431x	Power Scrub Plus + Regular Wash
SHU33/DLX	Power Scrub Plus + Rinse & Hold
SHU43C, SL34A, SHU432x	Regular Wash + Rinse & Hold
SHU53/66C/68, SHI66A/68	Scrub Wash + Delicate/Econo
SHU53A, SHX/SHY56, SL95A	Regular Wash + Quick Wash
SHU88	Power Scrub Plus + Quick Wash
SHU990x, SHV43/48	Power Scrub Plus + Regular Wash
SHU991x (UC/11)	Power Scrub Plus + Quick Wash
SHU991x (UC/12), SHU992x	Power Scrub Plus + Delicate/Econo
SHU995x	Regular Wash + Delicate Wash
SHV66A, SHY66A	Scrub Wash + Delicate/Econo
SHV68	Scrub Wash + Regular Wash
GI976/966, GM276	Intensive + Delicate
DW44	Heavy Wash + Light Wash
SHV46C, SL84A, SHX43E/ 46A-B	Regular Wash + Delicate/Econo
SHX33A	Regular Wash + Rinse & Hold
SHU43E/53E/66E	Rotating the program selector knob (see below) + Start / STop
SHV99, SHX99, SHY99

Switching to service test in Bosch shu43e/53e/66e dishwashers

To switch to test mode in Bosch SHU43E/53E/66E dishwasher, first turn the selector handle, responsible for washing mode, to the 6 o’clock position. Then hold the Start/Stop button and turn on the device by pressing the on/off switch. To start the test program, press the Start/Stop button. After completion of the test program, the Clean indicator will flash, and all other indicators will light up.

Next, I’ll describe how to decipher error codes in these models.

Switching to service test in Bosch shv46c, sl84a, shx33a/43e/46a-b dishwashers

To go to test mode in Bosch SHV46C, SL84A, SHX33A/43E/46A-B dishwashers, press and hold the 2nd and 3rd buttons from among those three buttons shown on the outline. Then turn on the machine by pressing the on/off button. After switching to the test mode, the indicator of the 2nd button (Regular Wash) will light, and the 3rd button will flash. Press the 2nd button (Regular Wash) to select the test program. Thus, the indicator of the 3rd button will light up. To start the test program, press the 3rd button. Wait until the test program completes to see the error code. You can skip particular tests by pressing the 2nd button (Regular Wash). To exit the test mode, turn off the machine.

Next, I’ll reveal how to decipher error codes in these models.

Switching to service test in Bosch shv/x/y99 dishwashers

To enter the test mode of the Bosch SHV/X/Y99 dishwashers, open the door, press and hold the two buttons, placed on left. Then, turn on the appliance by pressing the on/off switch. Continue pressing the “+” button until “S-3-” appears on display. Next, press the start button to check if there were any errors during the last eight washes. To start the test program, close the door. To see the error codes, wait for the tests to complete. You can skip particular tests by pressing the “-” button. To exit the test mode, turn off the dishwasher. To clear the error codes, select “S-6-“.

Further, I will tell how to decipher error codes in models with 2 or 3 display digits and on full-text displays for two lines.

Error reporting to display with 2 or 3 digits

In the user (standard) dishwasher mode you can see a much smaller number of error codes:

Code	Description / Way to eliminate
F	Water gaining problem (underfilling, overflow or water in the pan): see the description of the E3 error
2H	The last wash cycle continues too long. Breakage of the inlet valve or problems in the heating system (heating element, flow sensor, thermal sensor, relay on the master controller) can cause the error. Check the descriptions of E01, E5, and E17 error codes.
_h	Start delay (not an error)

Error codes based on the results of the test program (available only in diagnostic mode):

Code	Description / Solution
0	No problems detected
1	Aquasensor error: see the description of the error “E6”
2	Heating system error (heating element, flow sensor, thermal sensor, relay on board): see error description “E01”
4	Problems with a set of water: see the description of the error “E3”
8	Temperature sensor error: see error description “E2”
16	Flow switch error (not on all models): see error “E4”

Note: in case of several errors, the codes are summed up: if there are problems with heating and water gaining, you will get 2 + 4 = 6

When the error code is displayed on the display in two lines

Codes	Description / Solution
S3	No error
A	Aquasensor error (red): see the description of the error “E6”
B	Aquansensor error (green): see the description of the error “E6”
E	Flow switch error (no signal from it): see error “E4”
F	Problems with a set of water: see the description of the error “E3”
G	Flow switch error (does not stop): see error “E5”
H	Heating system error (heating element, flow sensor, thermal sensor, relay on board): see error description “E01”
K	NTC sensor error (short circuit or open circuit): see error description “E2”
xx	Step number of the test program (testing ends when the number is “00”)

Note: the upper line shows the current wash cycle, the lower one shows the error code

Error code output on dishwashers Bosch SHX33A/43E/46A-B, SHV46C, SL84A

Indicators	Description / Solution
✲ ✲ ☀	Heating system error (heating element, flow sensor, thermal sensor, relay on board): see error description “E01”
✲ ☀ ✲	NTC sensor error (thermal sensor): see the description of the error “E2”
✲ ☀ ☀	Problems with a set of water: see the description of the error “E3”
☀ ✲ ✲	Not used
☀ ✲ ☀	Not used
☀ ☀ ✲	Error Aquansensor: see error description “E6”
☀ ☀ ☀	Not used

Note: with several errors, their codes are NOT summed – the highest error code from the table above is shown: 1 – heating, 2 – temperature sensor, 3 – water set, 4 – aqua sensor

Error code output on dishwasher Bosch SHU43E / 53E / 66E

The names of the indicators used to display errors in these models can vary greatly: here are some possible options:

Ready – Ready LED, Ready
Circle – wash LEDs, brush symbol, Act inscription
Clean – cycle end LED, inscription Clean, End

Code	Indicators				Description
Code	Ready	Circle	Clean	NSF	Description
0	☀	✲	☀	✲	No error
1	☀	✲	☀	✲	Heating system error: see error description “E01”
2	☀	☀	☀	✲	Problems with a set of water: see the description of the error “E3”
3	☀	✲	☀	✲	NTC sensor error: see error description “E2”
4	☀	✲	☀	☀	Aquasensor error: see the description of the error “E6”

Other error codes for the Bosch Dishwasher

If your Bosch dishwasher displays fault codes in a different format than E00 (such as on models with a full LCD display) then you might be shown the following fault codes instead.

Error Codes	Cause/Action
A or B	Cause: Fault with the water sensor. Action: Inspect dishwasher for evidence of leaks. Ascertain whether anti-flood protection has been activated.
C	Cause: Motor tacho fault. Action: Check motor and motor tacho wiring for problems.
D	Cause: Wiring/electrical fault related to motor triac. Action: Check wiring on/to PCB and motor. Check the triac (on the PCB).
E	Cause: Diverter valve fault. What is the diverter valve?: The diverter valve is used to send water to only the top or bottom rack when the half load option has been selected. Action: Inspect diverter valve and its wiring for problems.
F	Cause: Fill timeout. The required water level is not sufficient within six minutes of the start of the programme.
G	Cause: Diverter triac fault. Action: Check diverter triac (on PCB) and its wiring.
H	Symptom: Dishwasher not heating. Cause: Possible problem with heating element or thermostat, or wiring issue.
K	Cause: Faulty thermostat sensor (NTC). Action: Inspect the NTC and thermostat, and their wiring.
0	Cause: Pressure sensor fault. Action: Check the pressure sensor and its wiring.

Bosch WC160 Dishwasher Error Codes

Error code					Error description	Advice
Intensive	Normal	Eco	Quick	Prewash
*	*			*	Inadequate water supply	1. Make sure the water inlet tap is fully open 2. Close the water tap, separate the water inlet hose from the tap and clean the filter 3. Restart your machine, contact CDA service if the error resumes
	*		*	*	Continual fill error	Close the tap and contact service
		*	*	*	The waste water in the machine cannot be discharged.	1. Drain hose is blocked 2. The filters of your machine might be blocked 3. Restart the dishwasher and cancel the programme 4. If the error continues, contact CDA service
*		*	*	*	Heater error	Contact service
	*	*	*	*	Alarm is active against water overflow	Turn off the dishwasher and disconnect the water supply
*	*	*	*	*	Faulty electronic card	Contact service
*		*		*	Overheating error (temperature in the machine is too high)	Contact service
*			*	*	Faulty heater sensor	Contact service

Bosch SHX46A Dishwasher Error Codes

While pushing (and holding) any two wash cycle buttons, turn the dishwasher on with the on/off switch. After releasing the buttons, LED “B” will be lit and LED “C” will flash, confirming you’re in the special programs menu.
To enter the test program, push button “B” repeatedly until the digital display shows “P1” or until LED “C” is lit.
Push button “C” to start the program — LED “C” will blink. The steps will show on the digital display (e.g.”S:01″) — push button “B” to skip a step.
Stored error codes will show on the digital display and LED’s.

The test program can only be stopped/reset by pushing the on/off button – it can’t be done by turning off the power.

Led‘s	Digital display	Error codes
Off – Off – Off	EO	No errors
Off – Off – Flashing	E1	Heating error
Off – Flashing – Off	E2	NTC error
Off – Flashing – Flashing	E3	Filling error
Flashing – Off – Off	E4	Water switch error
Flashing – Off – Flashing	E5	Float water level or motor speed error
Flashing – Flashing – Off	E6	Aqua sensor error

Bosch SHE4AM12UC - Ascenta Dishwasher Error Codes

Dw symptoms (seen during wash cycles)	Error code display (from cs test program)	Error code led's (active / clean / sanitized)	Solution
No errors	E:00	Off – Lit – Flashing	No errors.
Wash cycle abruptly ends with Clean LED glowing OR dw runs without heating (power module problem)	E:01 pump starting / switching defect OR E:02 defective working relay OR E:03 defective heating relay	Off – Off – Flashing	Replace power module (located in base).
Wash cycle abruptly ends with Clean LED glowing	E:20 heat pump winding resistance is wrong OR	Flashing – Off – Flashing	1. Check continuity between heat pump (m2) and power module harness connector. 2. Measure heat pump resistance between any 2 terminals. If ~ 13Q @ room temp, replace power module. If not, replace heat pump.
	E:21 heat pump is blocked / clogged OR		Remove debris / obstructions from heat pump. If pump impeller is stuck, replace heat pump.
	E:23 drain pump winding resistance is wrong OR	Flashing – Flashing – Off	1. Check continuity between drain pump (m3) and power module harness connector. 2. Measure drain pump resistance between any 2 terminals. If ~ 90Q @ room temp, replace power module. If not, replace drain pump.
	E:24 dw won't drain OR		Remove garbage disposal plug.
			Make sure drain hose is < 150” and includes a 20” high loop. Unclog house drain line.
	E:25 drain pump is blocked or sump drain pump cover is missing		1. Remove debris / obstructions from drain pump. 2. Remove sump drain pump cover and confirm drain pump impeller is turning freely. 3. Make sure sump drain pump cover is seated correctly
LED is flashing & dw can't operate	E:06 defective door latch	Off – Flashing – Off	Check continuity between door switch (e1) and power module harness connector.
			Measure voltage across door latch connector. If > 10V, replace door latch. If < 10V, replace power module.
No heating	E:08 heat pump detects low water level	Off – Flashing – Flashing	1. Check water supply & repair any leaks. 2. Check continuity between water inlet valve (s2) and power module harness connector. 3. Measure voltage across water inlet valve terminals (s2) during step 1 of customer service test program. If ~ 120V, replace water inlet valve. If not ~ 120V, replace power module.
	E:09 open heating element circuit OR		Check continuity between heating element (r1) and power module harness connector.
	E:12 heating element resistances not balanced		Measure heating element (r1) resistance, which should be * 5Q between terminals 1-2 & 2-3 and = 10Q between terminals 1-3 @ room temp. If not, replace heat pump. If so, replace power module.
	E:10 not enough heat		1. Decalcify heater with appropriate cleaner. 2. If problem persists after heating element has been decalcified, replace heat pump.
	E:11 NTC or NTC wiring harness error		1. Check continuity between NTC and power module harness connector. 2. Measure NTC resistance, which should be * 10kQ between terminals 1- 2 & 2-3 and * 20kQ between terminals 1-3 @ room temp. If not, replace heat pump. If so, replace power module.
	E:13 water too hot (> 75°C / 167°F)		Make sure water inlet temp is < 75°C / 167°F.
Water doesn’t fill and drain pump runs continually	E:15 float switch activated and dishwasher runs continually	Flashing – Off – Off	1. Remove debris / obstructions from drain pump / drain hose. Make sure float & float switch aren’t stuck. 2. Make sure water inlet valve isn't stuck "open". 3. Check float switch and wire harness (to power module).
Aqua sensor doesn’t run during wash cycle	E:28 aqua sensor not properly calibrated	Off – Off – Off	1. Check continuity between aqua sensor (14) and power module harness connector. 2. Make sure aqua sensor is clean where it enters the sump. 3. If electrical connections are good and the aqua sensor is clean, replace the aqua sensor.
No power	House wiring isn't 120V		Check house wiring connections and if supply voltage is * 98 - 120VAC to power module harness connector.
	Open "On/Off’ OR "Start" switch		1. Check "On/Off’ switch & power module connections. 2. Measure "On/Off' switch resistance. If it’s Q in "on" position, replace it. 3. If only drain pump is running, check if float switch has operated (see E:15 error code above). 4. If no LED’s flash when “On/Off” switch is pressed and the dishwasher door is open, replace operating module (in fascia panel).
Dispenser not operating	Detergent dispenser door jammed OR loose wiring connections		Make sure dispenser detergent door isn’t jammed.
			Check connections between rinse-aid dispenser, dispenser actuator (a2) and power module harness connector.
			Check dispenser actuator operation while running customer service test program (steps 15 & 20). If actuator operates, but doesn't open detergent dispenser cover, replace dispenser. If actuator doesn't operate, replace power module.
Rinse-aid LED is glowing	No rinse-aid OR loose wiring connections		1. Refill rinse aid, if empty. 2. Check connections between rinse-aid dispenser (e3) & operating module harness connector (K12). 3. Measure voltage between outer most dispenser terminals (1-3 on e3). If ~ 13VDC, replace dispenser. If not, replace operating module.
No drying	1. No rinse aid 2. Dispenser rinse aid setting = 0 3. Extra Dry Heat option hasn’t been turned on		1. Educate customer on using and refilling rinse aid. 2. Set rinse aid setting to “4” if it is at “0”. 3. Activate Extra Dry Heat option, if it’s not activated and is available on the dishwasher.
Washability issue (heat pump runs, but dishes still dirty)	1. Clogged spray arms or filters. 2. Spray arms not rotating		1. Remove debris / obstructions from filter and spray arms. 2. Make sure spray arms are properly attached and rotate freely. Make sure spray arms are properly aligned with the supply tube.
Dishwasher won’t start	1. Door is ajar 2. Heat pump has failed 3. Drain pump has failed		1. Educate customer on closing door securely 2. Replace faulty heat pump 3. Replace faulty drain pump

Bosch SB series Dishwasher Error Codes

Error codes	Cause	Remedial action
“Check water supply” display lights up.	Supply hose kinked.	Install supply hose without kinks.
	Tap turned off.	Turn on the tap.
	Tap jammed or calcified.	Turn on the tap.
		Flow rate must be min. 10 l/min., when water supply is open.
	Filter in the water supply blocked.	Switch off the appliance and pull out the mains plug. Turn off the tap. Unscrew water connection.
		Clean filter in the supply hose. Screw water connection on again. Check for leaks. Reconnect power supply. Switch on the appliance.
Error code E:07	Intake opening (on right inside of appliance) covered by utensils.	Arrange utensils so that the intake opening is not obstructed.
Error code E:12	Heating element calcified or soiled.	Clean appliance with dishwasher cleaning agent or descaler. Operate the dishwasher with water softening system and check the setting.
Error code E:22 is lit.	Filters [29] are soiled or blocked.	Clean filters.
Error code E:23 is lit.	Waste-water hose kinked or blocked.	Install hose without kinks, remove any residue.
	Siphon connection still sealed.	Check connection to siphon and open if required.
	Cover on the waste water pump loose.	Lock cover correctly.
Error code E:25 is lit.	Waste water pump blocked or cover on the waste water pump is not locked in position.	Clean pump and lock cover correctly.
Error code E:27 is lit.	Mains voltage too low.	Not an appliance fault, have the mains voltage and electrical installation checked.
A different error code is indicated on the digital display. (E:01 to E:30)	A technical fault has probably occurred.	Switch off appliances with the ON/OFF switch [11]. After a short time restart the appliance.
		If the problem recurs, turn off the tap and pull out the mains plug.
		Call customer service and mention the error code.
Display flashes.	Door not closed properly.	Close the door. Ensure that no objects (utensil, fragrance dispenser) are protruding over the basket and preventing the door from closing.
Refill indicator for salt [6] and/or rinse-aid [5] is lit.	No rinse aid.	Refill rinse aid.
	No salt.	Refill with special salt.
	Sensor does not detect salt tablets.	Use different special salt.
Refill indicator for salt [6] and/or rinse-aid [5] is not lit.	Refill indicator switched off.	Activation/deactivation (see chapter “Water softening system/Special salt"
	There is still enough special salt/rinse aid available.	Check refill indicator, levels.
Water is left in the appliance at the end of the programme.	Filter system or area under the filters [29] is blocked.	Clean filters and area underneath.
	Program has not ended yet.	Wait until programme ends or reset.

Other Dishwasher Error Codes

Error Codes	Causes	Testing and troubleshooting
E1	Heating error	1. Most often this is a fault of the heating element - there is no resistance or leakage to the housing.
		2. Faulty element on the electronic module responsible for the operation of the heater.
		3. Check the safety thermostat.
		4. Check flow sensor.
		5. Check the pressure switch (water level sensor).
E2	MTC sensor error (temperature sensor)	1. The LCTS sensor is defective, which provides information to the PM control unit. It is usually located in a block with a Tan, has a certain resistance (~ 55kΩ at 21 ° C).
E3	Problems with filling water	If the desired water level has not been reached for a certain amount of time. Depending on the model of the dishwasher (PM), the sequence of operations will be different. Either the PM will wait until the filling is carried out (earlier models), or the water will drain for one minute (later models).
		1. The hose "Aquastop" is defective.
		2. Faulty water drain pump.
		3. Check the intake valve.
		4. Intake of the intake filter.
		5. The pressure switch is faulty.
E4	Problems with the flow switch	The water flow switch is not at the set position. It is responsible for distributing water to the sprinklers and is installed under the heating element.
		1. Switch clogging.
		2. Malfunction of the engine, which acts on the flow switch and sets it in one position or another.
E5	Overfill level	1. The pressostat tube is clogged.
		2. The pressure switch is faulty (water level switch).
		3. The inlet valve is defective.
E6	Aquasensor Error	Aquasensor is an element that controls turbidity, stiffness, water contamination during rinsing at the initial stage. In the event that the dishes are dirty not much, it allows to exclude rinsing, saves water and electricity. Is next to Taine.
E8	Low water level in the pan	The heating element does not turn on. The circulation pump does not have enough water pressure and a pulse is applied to the module. Check the flow of water. A drain is also possible.
E9	TEN error	Most often occurs in dishwashers with a flow heater, which is built into the circulation pump, when the heater breaks. Check the heater for an open.
E11	Dishwasher works without a heater	Check NTS sensor, electronic module, power wires.
E14	Flow sensor error	The flow sensor does not detect the control pulses, but they flow to the circulation pump.
E15	AQUASTOP	There was a leakage of water. Check the water in the pan. The reasons for the leakage may be different.
E16	Unauthorized water set	Check the intake valve (flow sensor). Check the pressure switch (level sensor). One of the possible options is increased foaming.
E17	Water Failure Error	Check the flow sensor. It is also possible that the inlet pressure is too high.
E18		Do not turn off the power. The program will end after draining the water.
E21	Problems with the drain pump	The drain pump is blocked. Check the impeller for any foreign object. If there is no blockage, the pump is likely to be worn and can sometimes jam during rotation - it must be replaced.
E24	Error in draining the water	The hose for draining dirty water is clamped or broken.
E27	Undervoltage in the network	Check the voltage in the outlet. The error often appears during peak hours on urban power networks, for example in the evening. As an option - put the voltage regulator.