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P0650 Diagnostic Trouble Code Discussion for December 2010

Malfunction Indicator Lamp Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0650
Help Request Posted
2001 Chevrolet Lumina 3.1L MIL Lamp on VIN: 2G1WCJ52J0
P0650: Malfunction Indicator Lamp Circuit Malfunction. ... car with the cooling fans always running while car was on. after tracing all wiring and checking relays and the like we found that the PCM was creating the always on condition. We ordered another PCM from the local parts supplier (not dealer) and replaced,...
December 28, 2010