How to Fix Bosch Dishwasher Error E09

Error Code: E09 Difficulty: Hard

Problem: Internal heater fault within the heat pump.

How to Fix E09 Error (Step-by-Step)

1. Turn off the power to the dishwasher at the circuit breaker.
2. Shut off the water supply to the dishwasher and confirm the error stays cleared during a full test cycle.
3. Carefully slide the dishwasher out from its installation space and confirm the error stays cleared during a full test cycle.
4. Lay the dishwasher on its back to access the heat pump at the bottom.
5. Disconnect the electrical connectors and hoses attached to the heat pump assembly.
6. Remove the screws or clips holding the heat pump in place and remove the old unit.
7. Install the new heat pump assembly, reconnect all hoses and electrical connectors, and secure it in place before reassembling the dishwasher.
8. Turn the appliance off, wait about 2 minutes, then turn it back on.

Next Steps and Parts

Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.