Section 21 (Engine Controls - Self-Diagnostics): Summary
WARNING: This page is about a different car, the 2001 Saturn LW200, 2001 Saturn L200, and 2001 Saturn L100. However, it is still accessible from the selected car via links, so may be relevant.
If no hard DTCs are present, driveability symptoms exist or intermittent DTC(s) exist, proceed to appropriate TROUBLE SHOOTING - NO CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.