Join Now
International Automotive Technicians Network

P0645 Diagnostic Trouble Code Discussion for March 2015

A/C Clutch Relay Circuit Malfunction

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0645
Help Request Posted
2009 Ford Crown Victoria Police Interceptor 4.6L MIL Lamp on VIN: 2FAHP71V89
P0645: A/C clutch relay circuit malfunction. We have this 2009 CVPI Patrol car that has an E.G.R. and A/C issue. The car runs perfectly at idle and cruise. With the Solus Pro hooked up and car warmed up, the O2S sensors look good switching with cross counts at idle and up the range and the after Cat read...
March 09, 2015