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Dishwasher Wiring harness: What It Does and Signs It's Failing

The bundle of wires and plug-in connectors that links the control board to every motor, valve, heater and sensor. On models with the controls in the door, part of the harness runs through the hinge area.

How it works

Each connector clicks onto a part so the board can send it power or read its signal. On door-control models, opening the door flexes part of the harness every time you load the machine.

Signs it is failing

• Codes that come and go, especially when the door moves
• Several unrelated parts failing at once
• A melted or discolored connector
• Chewed wires (mice like the warm base of a dishwasher)

Many sensor and communication codes list the harness alongside the part; GE names the harness first for its pressure sensor code. A loose connector after a recent repair or install is a common cause.

Can you replace it yourself?

Wiring inside the machine carries line voltage, so harness checks and repairs are for a tech. Don't splice or jump wires to get the machine running.

Buying the right part

Harnesses are model-specific. A tech can often replace one section instead of the whole loom.

Error codes linked to the wiring harness

• C7Temperature sensor circuit faultGE
• PrSPressure sensor signal faultGE
• F8E2Fill valve electrical faultKitchenAid
• F1E2 / F2E2Main control communication errorKitchenAid
• LE / CEWash motor problemLG
• CE / ACCommunication error between boardsSamsung
• F8E2Fill valve electrical errorWhirlpool
• F3E2Temperature or soil sensor faultWhirlpool
• F1E1Control board faultWhirlpool
• FAE4 / F10E4Diverter valve errorWhirlpool

Last reviewed 2026-10-19.