Maytag Refrigerator Error Code PC ER — Communication Error
What this means
The PC ER error on Maytag refrigerators indicates a communication failure between the main control board (usually in the back) and the user interface/display board (on the front door). This can be caused by a loose wire harness connector, a damaged ribbon cable running through the door hinge area, a failed main board, or a failed display board.
Alternate codes: PCER
Step-by-step fix
4 stepsPower cycle the refrigerator
Unplug the refrigerator for 5 minutes, then plug it back in. A temporary communication glitch can sometimes be cleared by a full reset.
If the error clears but returns within a few hours, the communication link has an intermittent fault.
Check the wire harness at the door hinge
The communication wire often runs through the top door hinge area where it flexes every time the door opens. Inspect this harness for broken or pinched wires. Also check the connectors at both ends for corrosion.
This is the most common failure point. The wire can break internally while the insulation looks intact.
Test continuity through the harness
Disconnect the harness at both ends (at the door and at the main board). Test continuity through each wire. Any wire that reads open has a break.
Gently flex the harness while testing — an intermittent break will show as a flickering reading.
Replace the faulty component
If the harness is broken, replace it. If the harness tests fine, try replacing the display board first (it fails more commonly). If the error persists, replace the main control board.
When replacing the harness, route the new wires away from sharp edges and use strain relief clips.
When to call a professional
If you have replaced the harness and one of the boards but the error persists, professional diagnosis is recommended to avoid replacing parts unnecessarily.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Wire Harness (Door to Main Board)
Part #W10920466 · $15–$35
If harness wires fail continuity test
Display Board Assembly
Part #W10890094 · $60–$120
If display board is suspected after harness checks
Links may earn us a commission at no extra cost to you. We only recommend parts relevant to this repair.