F03
Maytag Dryer
Severity: ModerateWhat Does This Error Mean?
F03 means the inlet thermistor in your Maytag dryer is giving an incorrect reading. This sensor monitors the temperature of air entering the drum. The dryer stops heating to avoid a potential overheating risk.
Affected Models
- Maytag MEDB835DW
- Maytag MEDC215EW
- Maytag MED5500FW
- Maytag Bravos Dryer
Common Causes
- Inlet thermistor (temperature sensor) has failed
- Loose or disconnected wiring at the thermistor
- Restricted airflow causing abnormally high inlet temperatures
- Lint buildup near the sensor affecting its readings
- Control board fault preventing it from reading the sensor signal
How to Fix It
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Clean the lint filter thoroughly.
A clogged lint filter restricts airflow and causes temperature sensors to read high. Do this before every load.
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Check the exterior dryer vent for blockages.
Go outside and confirm the vent flap opens freely when the dryer runs. A blocked vent traps heat and stresses all temperature sensors.
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Unplug the dryer for 5 minutes to reset the control board.
Plug it back in and run a short timed dry cycle to see if F03 clears.
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If the error returns, check that the dryer has adequate clearance behind it.
The dryer needs at least 4 inches of space from the wall for proper airflow.
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If F03 persists with good airflow, call a technician to test and replace the thermistor.
A simple resistance check will confirm whether the sensor has failed.
When to Call a Professional
If cleaning the lint filter and vents does not resolve F03, a technician should replace the thermistor. It is a small, inexpensive part — but accessing it requires partial disassembly of the dryer.
Frequently Asked Questions
What does the inlet thermistor do?
It measures the temperature of air as it enters the drum. The dryer uses this reading to keep the heat within the correct range for your cycle.
How often should I clean the dryer vent?
Clean the vent duct at least once a year. If you dry several loads a week, clean it every 6 months.
Can F03 cause a fire risk?
F03 itself is the dryer's safety system working correctly — it shuts off heating to prevent overheating. However, a clogged vent (a common cause) is a serious fire hazard and should be addressed immediately.