Frigidaire · Dryer
Frigidaire Dryer E03 Error Code
Exhaust thermistor open
What this error means
E03 means the exhaust temperature sensor circuit is open. Heat modulation stops without valid exhaust feedback.
How E03 is detected
Heating faults such as E03 appear when the Frigidaire dryer control energizes the bake element, broil element, gas valve, or drying heater but does not detect expected temperature rise within the monitoring window. On Frigidaire FREQG5022AW, Frigidaire FFRE4120SW, and similar variants, open heating elements, failed igniters on gas dryers and ranges, or welded heater relays on the control board produce similar symptoms.
Loose thermistor plug should be ruled out first. unplug and reseat thermistor at blower housing. On electric ovens and dryers, test element continuity when cool; on gas appliances verify the ignitor glows for at least 15 seconds before the valve opens. Repeated E03 after confirming heat at the exhaust or oven cavity indicates a sensor or board issue rather than a simple element replacement.
Common causes
- Loose thermistor plug
- Broken wire at blower
- Open sensor element
- Lint shorting connector intermittently
Step-by-step fixes
- 1Unplug and reseat thermistor at blower housing
- 2Vacuum lint from connector
- 3Measure ohms at room temp per chart
- 4Run timed dry on low heat
When to call a technician
Open thermistor with good wiring needs sensor replacement.
Affected models
- Frigidaire FREQG5022AW
- Frigidaire FFRE4120SW
- Frigidaire CFLE3911AW
Prevention & maintenance
- Preheat the oven only as directed and avoid foil lining the bottom—blocked airflow causes heat faults related to E03.
- Record when E03 appears in the cycle and whether it clears after a 60-second power reset on your Frigidaire dryer—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for E03; Frigidaire uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting E03; reversed plugs on pumps and valves cause immediate repeat faults.