Whirlpool Dishwasher Error Code 12-6

Error code 12-6 indicates a problem in the Current Transformer A circuit, specifically a loose or faulty connection. The current transformer is an internal sensing component that monitors electrical current in the dishwasher. The appliance generates this code when the control board detects a disruption in that circuit. The fault is often caused by a loose wiring connector rather than a failed part.

It is not recommended to continue running the dishwasher while this fault code is active. The 12-6 code points to an electrical circuit problem, and operating the appliance with an unresolved wiring or component fault can risk further damage to the control board or other components. Disconnect power and address the issue before resuming normal use.

A power reset may temporarily clear the code, but if the underlying wiring connection or component fault has not been resolved, the 12-6 error will return once the dishwasher runs again. A reset is useful for confirming whether the fault is intermittent, but it is not a substitute for inspecting and repairing the Current Transformer A circuit.

If you are comfortable working safely with appliances after disconnecting power, you can inspect the wiring connections in the Current Transformer A circuit yourself. Start by unplugging the dishwasher or turning off its circuit breaker, then check for loose or corroded connectors and reseat them firmly. If the error returns after restoring power, replacing the current transformer or having a technician diagnose further is the next step.

If the fix is simply reseating a loose connector, the repair may cost little to nothing beyond a service call fee, which typically ranges from $75 to $150. If the current transformer itself needs replacement, parts and labor combined generally range from $100 to $300 depending on your location and the specific model. A full control board replacement, if needed, can push costs higher.