GE Cooktop Error Code 105

Error code 105 on a GE cooktop indicates a zero-cross failure. The cooktop's control board uses a zero-cross signal from the AC power supply to synchronize power delivery to the surface elements. When this signal is not detected, the cooktop shuts down and displays code 105. The fault points to either a supply voltage problem or, less commonly, a failed control board.

Start by cycling power to the cooktop. If the fault returns, use a multimeter to measure the voltage at the wall outlet supplying the cooktop. The voltage must read between 175VAC and 265VAC. If voltage is out of range, the issue lies with your home's wiring or circuit breaker. If voltage is correct and the error persists, the main control board is the likely failed component and will need to be replaced.

If the fix is simply resetting the cooktop or tightening a loose wiring connection, there may be little to no cost involved. If the circuit breaker or outlet wiring needs professional attention, expect electrical service costs in the range of $75 to $200 or more depending on the work required. A replacement main control board, if that is the failed component, typically costs between $150 and $350 for the part, with additional labor costs if a technician performs the repair.

Recycling power is the recommended first step for a 105 fault. Turn the cooktop off at the breaker or unplug it, wait a minute, then restore power. If the error was caused by a temporary power fluctuation or surge, the reset will often clear it. If the code returns immediately after power is restored, further diagnosis of the supply voltage or control board is needed.

Yes, the 105 fault is a safety-related shutdown. Without a valid zero-cross signal, the cooktop cannot regulate power to the heating elements properly, so the control board disables operation to prevent uncontrolled heating. Do not attempt to bypass or ignore this error. Resolve the underlying cause before using the cooktop.