Maytag Washer Error Code 12

Error code 12 on a Maytag washer means the upper dryer thermistor has been detected as open, indicating that the temperature sensor is not registering a rise in heat during the drying cycle. The control board expects to detect an increase in temperature within 3 minutes of operation, and when that does not happen, it faults out with code 12. The root cause can be a failed thermistor, a wiring problem, or an environmental issue such as a cold room or leaking door vent seals.

When error code 12 is active, the appliance has interrupted normal operation to prevent running a drying cycle without proper temperature monitoring. Continuing to force cycles without resolving the fault could result in inadequate drying performance. It is best to diagnose and correct the fault before resuming normal use.

Performing a reset may temporarily clear the code, but it will return if the underlying cause has not been addressed. The fault is triggered by the control board detecting that temperature has not risen within 3 minutes during operation, so the same conditions will produce the same code on the next cycle. Resetting is useful as a step to confirm whether an intermittent issue like a loose connection has been resolved, but it is not a substitute for proper diagnosis.

Some causes of error code 12 are DIY-friendly. Checking that the laundry room temperature is above 50 degrees Fahrenheit and inspecting the door vent seals for damage require no special tools. Checking wire terminal connections on the steamer circuit requires basic electrical safety awareness and a multimeter. Replacing a failed thermistor is a moderate DIY repair, but if you are not comfortable working with appliance wiring, a qualified technician is recommended.

If the fix is simply improving room temperature or reseating a loose wire connector, there may be no parts cost at all. A replacement thermistor typically costs in the range of $15 to $50 for the part alone. If door vent seals need replacement, parts generally range from $20 to $60. Adding professional labor, total repair costs can range from $100 to $250 depending on your location and the technician's rates.