GE Oven Error Code Lower Thermal Sensor SHORTED

This error means the control board has detected a short circuit in the lower oven temperature sensor circuit. The sensor normally operates by varying its electrical resistance with temperature, and a shorted condition means the circuit is reading abnormally low resistance. The oven cannot accurately monitor its own temperature in this state, so it flags the fault and restricts operation. The sensor itself, its wiring, or the CN9 connector on the power board are the most likely sources of the problem.

It is not recommended to continue using the oven with this fault active. Because the lower thermal sensor is responsible for monitoring oven temperature, a shorted sensor means the control system cannot reliably regulate heat in the lower cavity. This could lead to overheating or erratic temperature control. The oven should be inspected and the fault resolved before returning it to regular use.

If only the lower thermal sensor needs replacement, parts typically range from $20 to $60 depending on the specific model, and the repair is relatively straightforward. If the wiring harness is damaged, costs can increase depending on the extent of the damage. A power board replacement is the most expensive scenario, with parts alone often ranging from $80 to $200 or more. Professional labor charges will add to any of these estimates.

A knowledgeable DIYer can attempt to diagnose and resolve this fault by testing the sensor resistance with a multimeter after disconnecting the harness at the CN9 connector on the power board. If the sensor reads near zero ohms it should be replaced. If the sensor reads correctly, inspect the wiring harness for visible damage. Replacement sensors are a straightforward swap, but if the power board itself is at fault, that repair is more involved and may warrant professional service.

A power reset by turning off the circuit breaker for 30 seconds and restoring power may temporarily clear the error code, but it will return if the underlying short in the sensor circuit is still present. The fault is hardware-based, meaning it will be detected again as soon as the control board checks the sensor circuit during startup or operation. A lasting fix requires repairing or replacing the faulty component.