Frigidaire Range Error Code 1

Error code 1 on a Frigidaire range indicates an RTD sensor error. The RTD, or Resistance Temperature Detector, is the component that monitors oven cavity temperature by sending resistance readings to the control board. When those readings fall outside the expected range, the board triggers this code. The oven will typically not heat correctly or will be disabled until the fault is resolved.

It is not recommended to use the oven when error code 1 is active. A faulty RTD sensor means the control board cannot accurately monitor or regulate oven temperature, which could result in overheating or underheating. Surface burners on a gas or electric range may still function, but the oven should be considered unreliable until the fault is repaired.

Resetting the range by cutting power at the breaker for a few minutes may temporarily clear the error code, but it will return if the underlying fault in the RTD sensor or wiring is still present. A reset alone does not fix the hardware problem. Permanent resolution requires testing and replacing the faulty component.

A knowledgeable DIYer can diagnose this error using a multimeter to test the RTD sensor resistance, which should read approximately 1080 to 1100 ohms at room temperature. If the sensor reads open or shorted, replacing it is a straightforward repair that involves removing the sensor from the oven cavity and disconnecting its wiring harness. Wiring inspection and connector cleaning can also be done without specialized tools. Control board replacement is more complex and may warrant professional service.

If the RTD sensor is the culprit, replacement sensors typically cost between $20 and $60 for parts depending on the model. Professional labor to diagnose and replace the sensor generally adds $100 to $200 to the total. If the control board is at fault, board replacement costs can range from $150 to $400 or more for parts alone, making professional diagnosis important before purchasing components.