Maytag Dishwasher Error Code 1-2

Error code 1-2 indicates that the main control board has detected damaged or corrupted memory, or that the software components inside its microprocessor are incompatible with each other. The fault is internal to the control board and cannot be resolved by cleaning sensors or checking wiring. The standard repair is to disconnect power and replace the control board.

The correct fix is to disconnect power to the dishwasher and replace the main control board. There is no field-level procedure to repair or re-flash the microprocessor's memory, so board replacement is the direct solution. Always unplug the appliance or shut off the circuit breaker before beginning any repair work.

The cost depends on the specific control board required for your model and whether you hire a technician or replace the board yourself. Parts alone typically range from around $100 to $300 or more depending on the model. Professional labor can add $75 to $200 or more to the total repair cost.

A power reset may temporarily clear the display, but because the fault originates from corrupted or incompatible memory inside the control board's microprocessor, the error will almost always return. Resetting does not repair damaged memory, so the underlying cause remains after the reset.

A control board with corrupted memory cannot reliably manage cycle functions such as water fill, heating, and draining. Running the dishwasher in this condition risks incomplete cycles or unpredictable operation. It is best to avoid using the appliance until the control board has been replaced.