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P0650 Diagnostic Trouble Code Discussion for January 2009

Malfunction Indicator Lamp Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0650
Help Request Posted
1999 Cadillac Catera 3.0L Poor Idle Quality, Hesitation, Surge, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: W06VR52R9X
P0650: Malfunction Indicator Lamp Circuit Malfunction. Vehicle had not been driven in 6 months, and very little prior to that for a couple of years. Replaced fuel pump after recent storage and got vehicle running. After 300 miles, misfires increased, and very difficult starting due to cold Florida temps in 50's. ...
January 18, 2009