E10 error; unit may not recognize temperature settings or shows unrealistic temperature values.

Safety first: Disconnect from mains and allow to cool.

Steps:

• 1. Check for recent repairs: If the temperature sensor or control board was recently replaced, verify that the correct Bosch part numbers were used. Using a non‑matching NTC can cause E10.
• 2. Inspect sensor harness: Ensure the sensor wires are not pinched, spliced, or extended. Any modification can change resistance and calibration.
• 3. Dry the sensor: If the unit was washed aggressively or exposed to steam, moisture may have entered the sensor well. Allow the unit to dry for 24 hours in a warm, dry environment.
• 4. Replace sensor: If E10 persists and the sensor reading is unstable, replace the NTC sensor with the exact Bosch‑specified component.
• 5. Firmware / board: In rare cases, a mismatched or corrupted control board firmware can cause calibration errors. Replacement of the control board may be required via Bosch service.