FROM THE TROUBLESHOOTING LIBRARY
Bosch Dishwasher E20 Error Code Fix Guide
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What E20 means
Bosch assigns E20 to a heat-pump internal-heater fault/error. It is closely related in the Bosch index to E09, but it is a separate displayed code and should be checked against the exact manual.
Primary reference: Bosch Dishwasher Error Codes.
Safe checks
- Record E20 and the E-Nr.
- Reset the breaker for 30 seconds if safe, exactly as Bosch recommends for this fault.
- Run one unheated or short test only if the manual allows it; do not keep testing a returning heater code.
- If E20 remains, arrange Bosch or qualified service. Do not access the heater or heat pump.
When to stop
Smoke, a scorch smell, water, a tripped breaker or abnormal heat is a hard stop. Heater circuits require qualified diagnosis.
Parts You Might Need
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