Maytag Dryer Error Code E4

E4 on a Maytag stack dryer indicates a Lower Radiant Sensor Fault Count for the lower dryer pocket. It means the control board has recorded repeated faults from the sensor that monitors heat inside the lower drum. This code is specific to stacked dryer models and does not appear on single-unit dryers. It signals a problem with the lower unit's heat sensing circuit that requires inspection.

Continuing to run the lower dryer unit while E4 is active is not recommended. The radiant sensor plays a role in regulating heat, and a malfunctioning sensor could allow the dryer to overheat or run inefficiently. It is best to stop using the lower unit until the fault is diagnosed and resolved. The upper unit in a stack configuration may remain unaffected and usable depending on the model.

A power reset may temporarily clear the E4 code if the fault count resets after power is removed, but the code is likely to return if the underlying problem with the lower radiant sensor or its wiring has not been corrected. Resetting should be treated as a diagnostic step rather than a fix. Persistent reappearance of E4 after a reset confirms that a component repair or replacement is needed.

Some causes of E4 can be addressed without professional help, such as cleaning lint from around the sensor or reseating a loose wiring connector. However, testing the radiant sensor's output and diagnosing control board issues requires a multimeter and familiarity with appliance wiring. If you are not comfortable working with electrical components inside the dryer, it is safer to contact a qualified technician.

Repair costs vary depending on the root cause. Sensor replacement parts typically range from $20 to $80, and professional labor can add $75 to $200 depending on your location and the service provider. If the control board is the source of the fault, parts alone can range from $100 to $300 or more. Getting a diagnostic estimate before authorizing repairs is a good practice.