Kenmore Range/Oven F12 Error — Electronic Range Control Board Failure
The F12 error code indicates an internal fault on the Electronic Range Control (ERC) board — the main control board. This is the most expensive range repair and should only be considered after all other components (RTD sensor, relay, keypad) have been tested and cleared.
Confirming It’s the Board
F12 is sometimes triggered falsely by a defective RTD temperature sensor. Before purchasing a control board: test the oven RTD sensor resistance (should be approximately 1,100 ohms at room temperature), test the keypad for shorted keys, and verify all wire harness connections are secure.
Professional Diagnosis Recommended
Control board misdiagnosis is one of the most common (and expensive) appliance repair mistakes. Our technicians use systematic diagnostic procedures to confirm control board failure before recommending replacement, saving customers the cost of unnecessary parts.