In this article, I will explain how to diagnose the Bosch dishwasher error code e2 easily. The E2 error means that the temperature sensor (thermistor) of the Bosh dishwasher is not functioning properly. If you find that your Bosch dishwasher isn’t working properly, it’s probably because your Thermistor is tripping an error code. In some cases, this error code can be hard to understand and may not show up in the diagnostic monitor. If that’s the case with your Bosch dishwasher, it might be a good idea to learn how to test a Thermistor.
The Temperature sensor is the device that controls how the heating element operates. If the Temperature sensor/Thermistor fails then the heating element will not work properly. Most of the time, the Error E2 means that the heating element is operating at maximum capacity. You can find the thermistor at the same place where the heating element is there. You may have to remove the dishwasher tub in order to check the sensor.
How to Fix Bosch Dishwasher Error Code E2
The malfunctioning of your Thermostat is an indication that something may be wrong with your appliance or perhaps with the wiring. You can repair your dishwasher yourself, but you need to know how to test a Thermistor. It’s pretty easy if you’re willing to learn.
- head screwdriver.
- Digital Multi-meter.
- Adjustable Wrench.
How to access the Thermistor
- Turn off the power to the appliance and shut off the water supply valve.
- Now you need to remove all the baskets for dishes.
- Use a Phillips head screwdriver to unthread the mounting screws securing the lower access panel.
- Now set both panels aside.
- Using a 5/8 inch wrench or an adjustable wrench unthread The water supply line from the inlet valve fitting.
- Be careful of any water spillage.
- Unthread the screw to release the electric cover.
- Note the orientation of the power wires then untwist the wire nuts to disconnect the wires
- Unthread the screw to release the grounding wire.
- Unthread the strain relief nut and detach the strain relief and power wires from the bracket.
- Disconnect the drain hose from the sink drain or garbage disposer and feed it through the cabinet.
- Open the dishwasher door and unthread the mounting bracket screws.
- Now carefully, Pull the dishwasher out of the cabinet.
- Tip the dishwasher back and rest the tub on a towel or blanket.
- Use a Philips head screwdriver to loosen the mounting screw, securing the thermistor retainer.
- Rotate the retainer to release the Thermistor and disconnect the wires.
How to Test the Thermistor
- Clean the Contacts of the Thermistor/Temperature Sensor.
- Use a Multimeter to check the resistance.
- Normally at 21 degrees, the resistance will be nearly 55 kΩ.
- Put it in hot water and its resistance should change with increased temperature.
- If no change in resistance then the temperature sensor is faulty and you need to replace it.
We suggest you not repair the temperature sensor as it is a much more complicated device and can cost you more. It is better to buy a new thermistor and replace the old one. We also suggest you take the help of an experienced Technician in doing the above steps to fix Bosch dishwasher error code e2.
We have also given the E02 Error solution on our website. So please check it out as well. If you have any questions then please comment and we will be happy to answer them.