2.Measure control board supply voltage at the test points. Expected: 12 VDC and 5 VDC; a drop below 4.75 VDC on the logic rail points to a failed onboard regulator.

3.Inspect all connectors on the main control for corrosion, thermal stress, or backed-out pins. Reseat each connector with the power disconnected.

Part 00705047

Control module

Top Error Codes for Bosch

CodeTypeDescription

ER 12CooktopMismatch of relay port pin and software register.ER 13CooktopInvalid EEPROM data detected.ER 22CooktopKeyboard error detected by the mTwist control system.ER 23CooktopPWM frequency out of limit.ER 24CooktopWrong number of relays detected.ER 25CooktopFalse connection of mains supply detected.ER 26CooktopRelay supply voltage too high in the off state of control.ER 35CooktopSelection of keys error detected by the mTwist control system.F2CooktopUser Interface overheating error — the User Interface has switched off the...F4CooktopUser Interface overheating error — the User Interface has switched off all...F5CooktopUser Interface overheating warning — the User Interface has warned of...#ADishwasherApexx display: Aqua Sensor (red) fault.#BDishwasherApexx display: Aqua Sensor (green) fault.#EDishwasherApexx display: Water switch fault (no pulses detected).#FDishwasherApexx display: Water filling fault.

View all Bosch error codes

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