Amana Microwave Error Code PCE5

PCE5 indicates a communication failure between the high voltage board, low voltage board, and/or extended memory board inside your Amana microwave. These three boards must exchange data continuously for the microwave to function, and when that communication is interrupted the unit displays PCE5 and stops operating. The fault can be caused by loose wiring connections, a damaged cable, or a failed board.

No, you should not attempt to use the microwave while it is displaying PCE5. The error means the control boards cannot communicate reliably, so the microwave cannot regulate its own operation safely. Unplug the unit until the fault is diagnosed and resolved.

Start by unplugging the microwave for one minute and then reconnecting power to see if the error clears. If PCE5 returns, a technician should inspect the wire connections between the high voltage board and the low voltage board, as well as the cable between the low voltage board and the extended memory board. Any connectors that are loose or damaged should be reseated or replaced. If the wiring checks out, one or more of the control boards will need to be replaced.

Unplugging the microwave for a full minute and then plugging it back in is the recommended first step and will clear PCE5 if the cause was a transient power disruption. If the error returns immediately after the reset, there is a physical issue with the wiring or one of the control boards that requires hands-on diagnosis. A reset alone will not fix a loose connector or a failed board.

Repair costs vary depending on what is causing the fault. If only a loose connector needs to be reseated, the cost may be limited to a service call fee, typically in the range of $75 to $150. If one or more control boards need to be replaced, total repair costs including parts and labor can range from $150 to $400 or more depending on which board has failed and local labor rates.