Maytag Dishwasher Error Code 1F0

The 1F0 code is a Wash Arm Sensor Error indicating that five consecutive wash cycles have ended with the control system detecting a blocked or non-rotating wash arm. Once five cycles accumulate, the dishwasher locks out and stores the fault. Clearing it requires a reset of the built-in coils, not just unplugging the machine. The root cause is typically a missing magnet in the rinse arm, a faulty sensor cluster, or dishes physically obstructing the arm.

A standard power cycle will not clear the 1F0 fault. This code requires a specific reset of the built-in coils within the control system. Even after performing that reset, the fault will return after five more blocked-arm cycles if the root cause, whether a missing magnet, failed sensor, or obstructed arm, has not been corrected first.

If the fix is simply correcting a loading issue or reseating a dislodged magnet, there is no parts cost involved. Replacing a sensor cluster typically runs in the range of $30 to $80 for the part, with additional labor costs if a technician is needed. A full wash arm assembly replacement generally falls in the $20 to $60 range depending on the model.

Several causes of this error are DIY-accessible. Start by checking your loading pattern to ensure no dishes block the wash arm's rotation, and inspect the rear rinse arm for the small embedded magnet that the sensor reads. If the magnet is present and the arm spins freely by hand, the sensor cluster may need professional attention or replacement. A coil reset procedure is also required to clear the fault after the underlying problem is resolved.

Operating the dishwasher with a 1F0 error means the wash arm is not rotating correctly, so dishes are not being cleaned or sanitized properly. While this is not an electrical safety hazard, continued use without addressing the fault means wash performance will be significantly degraded. It is best to resolve the error before running additional cycles.