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Frigidaire·Dryerhigh severity
Frigidaire Dryer Error Code E4A
Exhaust thermistor open
Common Causes
- 1Outlet temperature sensor gone open-circuit
- 2A lead parted by heat near the blower scroll
- 3Corrosion breaking the sensor connector
Step-by-Step Troubleshooting
- 1
Because the board has lost its read on exhaust temperature entirely, it locks the dryer out rather than run blind — so the symptom is usually a machine that will not even start, and the fix is restoring that one reading
- 2
Find the sensor riding on the blower scroll where the air exits and meter it cold; a reading that runs off to over-limit confirms the open the code is naming
- 3
Since it sits right in the heat path, walk its two leads for a baked, brittle spot where a strand has parted — that mimics a dead sensor and is the cheaper find
- 4
Clean or renew a corroded connector before condemning the element, then swap the sensor only if it still meters open with a sound plug and lead
Pro Diagnostic Tip
The giveaway for E4A over a heat fault is that the dryer refuses to start at all: with no exhaust-temperature reading the board will not risk firing the heater, so it locks out up front. That lockout, not a mid-cycle cool-down, is what separates an open sensor from a dead element.
You Might Also Notice
- •Dryer will not start the cycle at all
- •No heat because the board has locked it out
- •Fault throws the instant Start is pressed
Parts, Cost & Difficulty
Repair Difficulty
Moderate — Some Experience NeededEstimated Repair Cost
$100–$225
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
137539200 exhaust thermistor
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Gas leak detector ($130), thermal fuse tester ($95), belt tension gauge, and vent inspection camera ($180). Our technician arrives with $3,000+ in professional tools — your diagnostic is free.
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Error code E4A is a high-severity issue that can cause further damage to your dryer if left unresolved. A licensed technician can diagnose and fix it the same day.
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Frequently Asked Questions
What does Frigidaire error code E4A mean?
Frigidaire error code E4A indicates: Exhaust thermistor open. This is a high-severity issue affecting your dryer.
How do I fix Frigidaire error code E4A?
Because the board has lost its read on exhaust temperature entirely, it locks the dryer out rather than run blind — so the symptom is usually a machine that will not even start, and the fix is restoring that one reading Then, Find the sensor riding on the blower scroll where the air exits and meter it cold; a reading that runs off to over-limit confirms the open the code is naming Then, Since it sits right in the heat path, walk its two leads for a baked, brittle spot where a strand has parted — that mimics a dead sensor and is the cheaper find There are 1 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How do I know if my dryer has error E4A?
Besides the error code on the display, common signs include: Dryer will not start the cycle at all; No heat because the board has locked it out; Fault throws the instant Start is pressed. If you notice any of these symptoms, check your dryer's display panel for error code E4A.
How much does it cost to fix Frigidaire E4A?
Repair costs for Frigidaire E4A typically range from $100 to $225 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.
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