Maytag Oven Error Code 3d22

Error code 3d22 means the control board has detected a shorted lower oven temperature sensor, specifically a resistance reading of 0 ohms on the sensor circuit. At room temperature, the sensor should read approximately 1080 ohms. A reading of 0 ohms tells the board the sensor or its wiring has a short circuit, and the oven cannot accurately measure or regulate temperature until the fault is corrected.

No, you should not use the oven with 3d22 active. With the lower oven temperature sensor shorted, the control board cannot read actual oven temperature, which means it cannot properly regulate the heating elements. This creates a risk of significant overheating or uncontrolled operation. Disconnect the oven from power until the sensor or wiring fault is repaired.

Unplug the oven before doing any testing. Pull the oven away from the wall to access the rear panel if needed, then locate the temperature sensor probe on the back wall of the lower oven interior. Disconnect the sensor from the wiring harness and set a multimeter to measure resistance in ohms. Touch the probes to the two sensor terminals. A healthy sensor at room temperature (around 70°F) will read approximately 1080 ohms. A reading at or near 0 ohms confirms the sensor is shorted and must be replaced.

Start by unplugging the oven and locating the lower oven temperature sensor, which is mounted on the rear interior wall of the lower cavity. Disconnect the sensor and use a multimeter set to ohms to measure resistance across the two sensor terminals. If the reading is 0 ohms or very close to it, the sensor is shorted and needs to be replaced. If the sensor reads approximately 1080 ohms at room temperature, inspect the wiring harness between the sensor and the control board for damage, pinching, or shorts.

A replacement lower oven temperature sensor for a Maytag oven typically costs between $20 and $50 for the part. Replacing it is a relatively accessible repair for someone comfortable working with appliances, requiring basic tools and a multimeter. If a technician does the repair, expect to pay an additional $100 to $200 in labor depending on your area. If the control board turns out to be the cause, board replacement costs significantly more, often $150 to $300 or more for the part alone.