Error Code: F12 Difficulty: Hard
Problem: Main board & Display communication error. There is a communication issue between the main control board and the display.
How to Fix F12 Error (Step-by-Step)
- Disconnect the dishwasher from power by turning off the circuit breaker.
- Remove the outer door panel by taking out the screws around its perimeter.
- Locate the main control board, usually found in a plastic casing at the bottom of the dishwasher, and the display board, located at the top of the door.
- Carefully disconnect the wire harnesses connecting the two boards. Inspect the wires for any signs of damage, such as burns or breaks.
- If the wiring appears intact, the issue is likely with one of the boards. It is recommended to replace both the main control board (W10805386) and the display board (W11612327) to ensure compatibility.
- Mount the new boards and reconnect the wire harnesses and confirm the error stays cleared during a full test cycle.
- Reassemble the door panel and restore power to the dishwasher to see if the error is cleared.
- Turn the appliance off, wait about 2 minutes, then turn it back on.
What to Check Next on This Amana Dishwasher
Focused repair path: dishwasher fill, drain, wash motor, heating, leak, sensor, and control checks. Do not treat a returning fault as a reset-only problem; use the point in the cycle where the fault appears to choose the next check.
- Disconnect power before opening panels, then confirm the door latch, float, inlet valve, drain path, and harness connections are seated.
- Match the timing of the failure to the likely path: fill, wash circulation, drain, heat, leak detection, or control communication.
- Clear debris from filters, sump areas, spray arms, and the drain loop before treating the fault as a failed board.
- If a part is suspected, verify voltage or continuity where appropriate and match the complete Amana dishwasher model number before ordering.
Check, inspect, clean, test, measure, remove, reconnect, clear, and replace parts only when the symptom supports that path. If these checks point toward a part, verify the complete Amana model number from the appliance tag before ordering. Similar error wording can use different valves, sensors, pumps, motors, heaters, locks, switches, fans, or control boards depending on the exact model.
- W10879262
- W11612327
When It’s Better to Replace Than Repair
Dishwasher repairs can add up quickly when the pump, control, heater, or leak-related parts fail.
Confirm cabinet width, water line, drain routing, electrical connection, and panel style before ordering.
For repair parts, verify exact fit with the full dishwasher model number before buying; these links are general replacement-appliance shopping options.
- [OK]Drain pump or circulation pump failure
- [OK]Leaking tub, door, or float-switch issues
- [OK]Heater or control failures on an older unit
- [OK]Repeated poor washing or drying performance
Recommended Dishwasher Replacement Options
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Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
Browse all Amana error codes: Amana Error Codes










