Electrolux Dryer Error Code Thermistor fault

A thermistor fault means the dryer's control board has detected an open or short circuit in the thermistor, which is the sensor that monitors drying temperature. The fault can be caused by a disconnected plug, damaged wiring, or a failed thermistor. The dryer will not operate normally while this fault is active. A functioning thermistor should measure 40 to 60 kΩ resistance at room temperature (20 to 30°C).

You should not continue using the dryer while the thermistor fault is active. The thermistor is a critical safety component that allows the control board to monitor and regulate heat. Without valid temperature data, the dryer cannot protect itself from overheating, which could damage the appliance or create a fire risk. Resolve the fault before resuming normal use.

If only the thermistor itself needs replacing, parts typically cost in the range of $15 to $60 depending on the model, making it one of the more affordable dryer repairs. If a service technician carries out the diagnosis and replacement, total costs including labor are generally in the range of $100 to $250. Wiring harness repairs or control board replacement would increase costs beyond these figures. Getting a quote from a qualified technician before proceeding is advisable if you are not comfortable with self-repair.

A knowledgeable DIYer can start by checking whether the thermistor plug has come loose and reseating it securely. Testing the thermistor resistance with a multimeter and comparing the reading to the 40 to 60 kΩ specification at 20 to 30°C will confirm whether the sensor has failed. If wiring or the thermistor element is at fault, replacing the component is a manageable repair for someone comfortable working inside appliances. If you are unsure, contacting a qualified service technician is the recommended approach.

A power reset may temporarily clear the fault code, but it will return if the underlying problem with the thermistor circuit has not been repaired. The control board will detect the open or short circuit again as soon as the dryer attempts to operate. A lasting fix requires diagnosing and correcting the root cause, whether that is a loose connection, damaged wiring, or a failed thermistor.