GE Range Error Code C5

C5 on a GE range signals a communication failure with the Lower Temp Encoder, the component that reads your lower oven temperature setting input. The control board is not receiving a valid signal from this encoder. The fault can be caused by a loose harness connection, damaged wiring, or a failed encoder component.

Power cycling the range by unplugging it or tripping its circuit breaker for a few minutes may temporarily clear the C5 code. However, if the underlying harness or encoder problem is not corrected, the code will return. A reset alone is not a repair and should only be used as part of a broader diagnostic process.

If the fix is simply reseating a loose harness connector, there is no parts cost involved. Replacing the lower temp encoder typically costs somewhere in the range of $30 to $80 for the part, while a main control board can range from $150 to $350 or more depending on the model. Professional labor charges vary by region but generally add $100 to $200 on top of parts costs.

The recommended first step is to inspect the wiring harness connected to the lower temp encoder, reseating all connectors and looking for visible wire damage. This is a task many experienced DIYers can handle after disconnecting power to the range. If the harness is intact, replacing the encoder or control board typically requires basic hand tools and comfort working with appliance electronics.

A C5 error means the control board cannot reliably read the lower oven temperature setting input, so the lower oven may not operate correctly or may be disabled entirely. Using the range in this condition is not recommended for the lower oven cavity, as temperature control cannot be confirmed. The upper oven or surface burners may still function normally depending on the model.