Maytag Range Error Code 1d12

Error code 1d12 means the control board detected a runaway temperature condition in the lower oven cavity, specifically a temperature at or above 650°F with the oven door in the unlocked position. This is not a normal baking or broiling temperature, so the control board shut down the oven to prevent damage. The most likely causes are a stuck relay on the control board or a faulty lower oven temperature sensor providing bad data.

Start by disconnecting power to the range for at least five minutes to clear the fault and reset the control board. After restoring power, if 1d12 returns or the oven overheats again, pull the lower oven temperature sensor and measure its resistance with a multimeter; a reading far outside 1,080 ohms at room temperature confirms a bad sensor. If the sensor tests correctly, the relay contacts on the control board are the next component to inspect or replace. A failed relay that is welded closed requires replacing the control board.

Disconnecting power may clear the 1d12 code temporarily, but it does not fix the underlying problem. If the lower oven temperature sensor is drifting out of spec or the relay contacts on the control board are damaged, the runaway condition and the fault code will return during the next use. A power reset is the correct first step to confirm the fault is active and not a one-time glitch, but any recurrence of 1d12 means component-level diagnosis is required.

No, you should not use the lower oven while 1d12 is active. This code indicates the oven reached at least 650°F without being in a self-clean cycle, which means the temperature regulation system failed. Operating the oven again before diagnosing and resolving the fault risks damaging oven components, scorching food, or creating a fire hazard. The cooktop surface burners can still be used, but the lower oven should remain off until the sensor and relay contacts are verified.

A replacement lower oven temperature sensor typically costs between $20 and $50 for the part and takes under 30 minutes to replace, making it a common DIY repair. A new control board with functioning relays generally runs $150 to $350 depending on the specific Maytag model. If you hire a technician, expect a service call fee of $75 to $120 plus parts and labor, bringing a control board repair to $300 or more in total. Diagnosing the sensor first is the right starting point since it is the less expensive fix.