Maytag Range Error Code 9d31

Error code 9d31 means the control board detected that both the lock switch and the unlock switch on the upper or single oven door latch are closed at the same time. These two switches should never be closed simultaneously, so the control board flags it as a fault. The most likely causes are a shorted wiring harness, a failed latch switch, or a jammed latch mechanism.

You should not use the oven with code 9d31 active. Because the control board cannot confirm the actual state of the door latch, it cannot safely manage self-clean cycles or verify the door is properly secured. Surface burners on a gas or electric range may still function, but operating the oven cavity in this condition is not advisable until the latch fault is resolved.

Yes. If the door latch mechanism is physically obstructed by food debris or is mechanically bound in a mid-travel position, it can simultaneously trigger both the lock switch and the unlock switch. Cleaning the latch area thoroughly and manually cycling the latch to verify it moves freely is a worthwhile step before replacing any electrical components.

Start with a Power On Reset by unplugging the range or switching off the circuit breaker for one to two minutes, then restoring power. If 9d31 returns, inspect the door latch assembly and the wiring harness running to the lock and unlock switches for visible damage, pinched wires, or debris. Use a multimeter to test each switch for proper continuity relative to latch position. If a switch or harness segment is faulty, replace the affected part. If all components test correctly, the control board may need replacement.

If the fix is a Power On Reset, the cost is nothing. Replacing a door latch switch assembly typically costs between $30 and $80 for the part, and it is a repair many homeowners can complete with basic tools and a multimeter. A replacement wiring harness runs roughly $20 to $60. If the control board is the root cause, expect parts costs of $150 to $350 or more depending on the model, which makes professional diagnosis worthwhile before purchasing that component.