GE Range Error Code C1

C1 on a GE range indicates a communication failure between the main control board and the Main Relay Board. The two boards use a wiring harness to exchange signals, and when that link is broken or degraded, the C1 code is generated. The range may stop functioning normally until the fault is diagnosed and corrected.

A power reset by disconnecting the range from power for a few minutes may temporarily clear the code, but it will return if the underlying communication fault is still present. A reset does not fix a loose harness connection or a failed board. Proper diagnosis and repair of the root cause are required for a permanent fix.

If only a harness connector needs reseating or a damaged wire needs repair, costs can be minimal, primarily covering a service call fee in the range of 75 to 150 dollars. If the Main Relay Board needs replacement, parts typically range from 80 to 200 dollars plus labor. Replacing the primary control board, if required, can push total repair costs to between 200 and 400 dollars or more depending on the model.

Start by inspecting the wiring harness that connects the main control board to the Main Relay Board. Check for loose connectors, bent pins, and any visible wire damage. If the harness is intact, the next step is replacing the Main Relay Board. If the code persists after the board replacement, the primary control board should be tested.

A C1 error means the control board cannot properly communicate with the relay board, which controls power delivery to heating elements. Operating the range in this state is not recommended because the control system may not be able to regulate the heating components correctly. It is best to stop using the range until the fault is repaired.