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P0645 Diagnostic Trouble Code Discussion for May 2004

A/C Clutch Relay Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0645
Help Request Posted
2000 Jeep Cherokee Sport 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4FF4852Y
P0645: A/C Clutch Relay Circuit Malfunction. Help!!! Dealer car, customer bought it and returned with jeep running rough and popping through the intake at idle. Check engine light on with above codes, cleared codes, only fan relay code is hard intill vehicle warms up. A/c inop. turn a/c on A/c code appea...
May 27, 2004