Bosch Dishwasher Error Code E06 — What It Means and How to Fix It
Error code E06 on a Bosch dishwasher commonly points to a problem in the appliance’s heating or temperature-detection subsystem. Depending on the model and year, E06 is often logged when the control board detects an unexpected temperature reading (thermistor/NTC sensor fault), an open/shorted heating element, or a communication/wiring fault between the heater/thermistor and the main electronic board. When this happens the dishwasher may pause heating or stop the cycle to protect the appliance and your home. Typical user impacts include longer wash or drying times, poor cleaning or sanitizing performance, unexpected cycle interruptions, increased energy use, and — in rare cases — a risk of overheating if the temperature sensor has failed to report correctly. Because heating elements and sensors are part of the dishwasher’s safety and sanitization systems, addressing E06 promptly helps avoid ongoing performance loss and safety hazards.
Common Causes
- Faulty NTC temperature sensor (thermistor) or intermittent thermistor connection
- Defective heating element (open or short circuit)
- Damaged wiring harness or loose connectors between sensor/element and control board
- Malfunctioning control board (PCB) or driver relay that powers the heater
- Control software/firmware glitch requiring a reset
- Shorted or failed flow meter causing incorrect cycle sequencing (on some models)
- Corrosion or water intrusion affecting electrical connectors or sensor contacts
Troubleshooting Steps
- Safety first: disconnect power by unplugging the dishwasher or switching off the breaker before inspecting internal components.
- Reset the dishwasher: many Bosch units clear transient faults with a power cycle — turn off power for 60 seconds, then restore and run a quick cycle. Check if E06 returns.
- Inspect external issues: ensure water supply is stable, filters and spray arms are clean, and the door latches properly. Sometimes secondary faults can trigger sensor error codes.
- Check the error log and diagnostic mode: enter the Bosch service diagnostics (refer to your model’s manual) to read historical errors and run a heater/NTC test cycle.
- Visual inspection: remove the toe-kick and access panels to inspect wiring to the heating element and thermistor for burn marks, corrosion, loose or unplugged connectors.
- Test the thermistor (NTC sensor): with power off, measure resistance with a multimeter at room temperature and compare to your model’s specification (consult the service manual). A wildly out-of-range value indicates a bad sensor.
- Test the heating element: check for continuity with a multimeter and look for signs of short to ground. An open circuit means a fail