Retrieving Diagnostic Trouble Codes
WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
Connect scan tool to vehicle Data Link Connector (DLC) located under instrument panel. Select POWERTRAIN CONTROL MODULE DISPLAY DTCs function on scan tool. There is only one DTC that can be set by PCM which affects HVAC system on this vehicle. See DTC P0530: A/C PRESSURE SENSOR SIGNAL VOLTAGE OUT OF RANGE . Before diagnosing DTC, perform diagnostic system check. See DIAGNOSTIC SYSTEM CHECK .