Frigidaire · Dryer Moderate
E5C — Exhaust thermistor shorted / over temperature
Control reads thermistor resistance too low or sees an over-temperature condition at the exhaust. Often the sensor is shorted, or airflow is severely restricted causing real overheat.
- Keep using it?
- Yes, with caution
- DIY difficulty
- Moderate
- Verified against
- frigidaire.com ↗
How to fix it
- Unplug the dryer.
- Clean the lint filter and inspect the full vent run to the outside hood — clear any blockage.
- Remove access panel and measure exhaust thermistor resistance; replace if near 0 ohms.
- Inspect heater element/relay for welded contacts.
- Run a test cycle and verify exhaust temp with a meter probe — should not exceed ~165°F outlet.
- Replace main control board if relay sticks closed with no command.
Why it happens
Typical signs: E5C shown on display · Dryer shuts down during cycle · Cabinet/exhaust hotter than normal · Long dry times
- Clogged lint screen or vent duct Restricted airflow drives real exhaust temp above limit.
- Shorted exhaust thermistor Sensor failed shorted, reads near 0 ohms.
- Stuck-closed heating element relay Element runs constantly even when control commands off.
- Main control board fault Bad input or relay driver.
Parts you may need
If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.
More Frigidaire dryer codes
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: frigidaire.com.