Maytag Oven Error Code 1d12

Error code 1d12 means the control board detected a runaway temperature of 650°F or higher in the lower oven while the door was unlocked. This triggers a protective lockout to prevent a genuine overheating event. The most common cause is a failed lower oven temperature sensor reading above 2237 ohms, which causes the board to see a falsely high temperature and shut the oven down.

Start by testing the lower oven temperature sensor resistance with a multimeter at room temperature (approximately 70°F). The sensor should read around 1080 ohms; a reading above 2237 ohms means the sensor has failed and needs to be replaced. If the sensor tests good, inspect the wiring harness between the sensor and the control board for damage, burns, or loose connections. If both test good, the control board may be at fault, and professional diagnosis is advisable at that point.

Unplugging the oven or cutting power at the breaker for 30 seconds will clear the 1d12 code temporarily, and the oven may operate again until the fault condition is detected again. However, if the underlying sensor failure or wiring issue is not corrected, the code will return, often quickly. Clearing the code without fixing the root cause is not a repair and does not make the oven safe to use long-term.

No, you should not use the lower oven while 1d12 is active. The code indicates either a real overheating condition or a sensor failure that prevents the control board from accurately monitoring oven temperature. In either case, operating the oven without a functioning temperature sensor removes the safety controls designed to prevent damage or fire. Diagnose and resolve the fault before resuming use.

A replacement lower oven temperature sensor typically costs between $20 and $60 for the part, and replacing it is a manageable DIY repair requiring only a screwdriver and a multimeter. If the control board is the cause, board replacements range from $150 to $350 or more for the part alone, and professional labor adds $100 to $200 depending on your area. Confirming the sensor is the problem with a resistance test before ordering parts will save unnecessary expense.