KitchenAid Dishwasher Error Code 1-2

Error code 1-2 means the main control board has detected a problem with its own internal memory or software. Either the memory is damaged or corrupted, or there are incompatible software components inside the microcontroller. This is a self-reported firmware or memory fault, not a mechanical or sensor issue. The dishwasher stops operating because it cannot trust its own programming to run cycles correctly.

No, the dishwasher will not complete a normal wash cycle with code 1-2 active. The control board has flagged its own software or memory as unreliable, which means it cannot properly sequence water fill, heating, or draining. Attempting to run cycles in this state could result in incomplete washes or, in a worst case, unpredictable behavior from the control system. The board should be replaced before regular use resumes.

A power reset occasionally clears code 1-2 if the fault was caused by a temporary glitch during a power fluctuation. Unplug the dishwasher or turn off the breaker for at least 5 minutes, then restore power and run a test cycle. If the code returns, the control board has a persistent memory or software fault and will need to be replaced. A reset alone will not fix corrupted memory or incompatible firmware components inside the microcontroller.

Start by unplugging the dishwasher or shutting off the circuit breaker for 5 minutes to allow a full power reset. If the code clears and does not return, no further action may be needed. If code 1-2 comes back after restoring power, the main control board must be replaced. This is not a repairable firmware issue in the field since the memory or micro components inside the board itself are the problem.

A replacement KitchenAid dishwasher control board typically costs between $100 and $250 for the part, depending on the model. If you hire a technician, expect to add $100 to $200 in labor, bringing the total repair to roughly $200 to $450. Replacing the control board yourself is a moderate DIY task requiring only basic tools, a compatible replacement board for your specific model number, and comfort working around electrical components with the power disconnected.