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P1599 Diagnostic Trouble Code Discussion for December 2008

A/C Pressure Sensor Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P1599
Help Request Posted
2002 Saturn SL2 1.9L Poor Idle Quality, Stall, MIL Lamp on VIN: 1G8ZK54782
P1599: Engine Stall Or Near Stall Detected. We replaced the IAC (idle control valve) and cleaned the TB (throttle body) and deleted the above malfunction DTC's. After a test drive, we noted that there was excessive stalling problems and the DTC's had returned but only when cold. Upon deleted the DTC's a...
December 01, 2008
2001 Saturn SC1 1.9L Poor Idle Quality, Stall VIN: 1G8ZP12831
P1599: Engine Stall Or Near Stall Detected. I got this car as a stalling problem,..with Snap-On scanner unable to control idle under 1200+- RPM,..after cleaning no change,..replace IAC motor, I am able to control idle speed top to bottom,..NOW the idle will go and stay at 2500 rpm of 1500 rpm,..the...
December 29, 2008