Maytag Dryer Error Code 04

Error code 04 on a Maytag dryer signals a possible motor transistor fault, where the control board detects the motor transistor as open or shorted during startup. This is detected by the machine control board, which monitors the motor circuit before allowing a cycle to begin. The fault may be caused by a loose wiring connection or an actual failure of the control board's motor transistor. Running the dryer's System Check Mode is the recommended first step to determine whether the fault is real or transient.

It is not recommended to continue running the dryer while error code 04 is active. A fault in the motor transistor circuit can prevent the dryer from starting correctly or cause unpredictable operation. Until the motor circuit connections are confirmed secure and System Check Mode verifies normal relay function, the dryer should remain unplugged and out of service.

If the fix is simply reseating a loose wiring connector, there may be no parts cost at all, though a service call fee typically runs in the range of $75 to $150. If the machine control board needs replacement, parts alone can range from $100 to $300 or more depending on the specific model, with total repair costs including labor potentially reaching $200 to $450. Getting a firm diagnosis through System Check Mode before ordering parts helps avoid unnecessary expenses.

Checking and reseating the motor circuit wiring connectors is a straightforward repair that many technicians and experienced DIYers can perform after unplugging the dryer. Running the System Check Mode to test motor relay function is also accessible if you follow the dryer's diagnostic entry procedure. If the relay fails the System Check, replacing the machine control board is required, which involves more disassembly and should be approached carefully. If you are uncomfortable working inside appliance electronics, a qualified technician is the safer choice.

Unplugging the dryer for several minutes and restoring power can clear a transient instance of error code 04, particularly if a momentary electrical fault caused it. However, if the underlying cause is a loose connection or a failed motor transistor on the control board, the code will return at the next startup. A reset alone is not a repair, and System Check Mode should be used to confirm whether the motor relay is functioning properly.