As a rule, the E02 error appears in the Bosch dishwasher if the temperature sensor (thermistor) fails. The part is responsible for the heating element operation. In most cases, the element operates at maximum power it there is the E02 error code. The thermistor is located in the block with the heating element.
How To Test A Thermistor?
A thermal sensor or thermostat is one of the weaknesses of most dishwashers. It is necessary to clearly understand that the problem is exactly in this part. Therefore, the diagnostic algorithm will be as follows:
- disconnect the device from the mains and water supply;
- remove all the baskets for dishes;
- dismantle the lower sprinkler and remove the garbage filter;
- set the device upside down and remove the side fastenings;
- gently unplug the branch pipe and lift the bottom of the dishwasher;
- having got access to the thermostat, disconnect it from the supply wires;
- clean the contacts of the temperature sensor and check it with a tester. It has a certain resistance (~ 55 kΩ at 21 ° C). If you put the part in hot water, the resistance of the working sensor will change with its heating.
How to test an NTC Sensor dishwasher
- if the thermostat has failed, replace it and reassemble the dishwasher. Don’t forget to check the wiring leading to the thermostat before.
Do not try to repair the thermistor as it can’t be fixed. It’s much easier and cheaper to replace an old thermistor with a new one. Therefore, the E02 error code will disappear from the Bosch dishwasher screen.
Bosch Dishwasher Thermistor Replacement