Frigidaire Refrigerator Error Code 38

Error code 38 on a Frigidaire refrigerator means the control board has detected a shorted freezer temperature sensor. The freezer thermistor is responsible for measuring the temperature inside the freezer compartment and sending that data to the control board. When a short is detected, the board cannot accurately read the freezer temperature, which can affect cooling performance and compressor operation. The fault needs to be diagnosed by inspecting the sensor, its wiring, and the connector.

Performing a reset by unplugging the refrigerator for a few minutes may temporarily clear the error code from the display, but the code will return if the underlying fault is still present. A shorted thermistor or damaged wiring will continue to send an out-of-range signal to the control board, re-triggering the fault. A reset is useful for confirming whether the error is intermittent or persistent, but it is not a fix for the actual problem.

If the freezer thermistor itself is the cause, the part typically costs in the range of $15 to $50 depending on the model, making it one of the more affordable repairs. Labor costs for a professional technician can add $80 to $150 or more depending on your location and service provider. If the control board is at fault, parts and labor combined can bring the total repair cost into the $200 to $400 range or higher. Getting a diagnosis before committing to a repair helps avoid replacing parts unnecessarily.

A knowledgeable DIYer can diagnose this code by visually inspecting the freezer thermistor, its wiring harness, and the connector for obvious damage, corrosion, or moisture. If the wiring checks out, testing the thermistor's resistance with a multimeter and comparing it to the expected value at a known temperature can confirm whether the sensor has failed. Replacing the thermistor is a relatively straightforward repair if you are comfortable disconnecting components and working inside the appliance. If the sensor and wiring both appear good, the control board may be at fault, which is a more involved diagnosis.

Operating the refrigerator with error code 38 active carries some risk because the control board cannot reliably monitor or regulate the freezer temperature. The freezer may run too warm or cycle improperly, putting frozen food safety at risk. Short-term use while waiting for parts is a judgment call, but you should monitor the freezer temperature independently with a thermometer and avoid storing critical items until the fault is resolved.