Whirlpool Oven Error Code 12

Error code 12 on a Whirlpool oven means the upper oven temperature sensor has a shorted circuit. The control board detects an abnormally low resistance reading from the sensor, which prevents the oven from accurately monitoring cavity temperature. The oven will not operate normally until the fault is diagnosed and repaired. The most common cause is a failed sensor probe that needs to be replaced.

It is not recommended to use the oven while error code 12 is active. A shorted temperature sensor means the control board cannot accurately read the oven cavity temperature, which could result in uncontrolled heating or the oven failing to regulate properly. Continued use risks food safety issues and potential damage to the appliance. The range should remain unplugged until the fault is corrected.

If only the temperature sensor probe needs replacement, parts typically range from around $20 to $60 depending on the specific model, and the repair is relatively simple. If professional labor is required, total costs including parts and service often fall in the range of $100 to $250. Repairs involving wiring harness replacement or a control board can cost more, potentially ranging from $200 to $400 or higher depending on parts availability and local labor rates.

A knowledgeable DIYer can diagnose this fault by unplugging the range, disconnecting the sensor from the wiring harness, and using a multimeter to measure sensor resistance and check for a short to the sensor casing. If the sensor tests faulty, replacing it is a straightforward repair involving removing a couple of mounting screws inside the oven cavity and disconnecting the wiring harness. However, if the harness or control board is involved, the repair becomes more complex and professional service may be advisable.

Resetting the oven by unplugging it for a few minutes may temporarily clear the error code, but it will return as soon as the control board re-reads the shorted sensor circuit. Error code 12 reflects an active hardware fault, not a random software glitch, so the underlying problem with the sensor or wiring must be corrected for the code to clear permanently.