Engine Controls Self-Diagnostics - 2.2L: Summary

If no Diagnostic Trouble Codes (DTC) are present and a no-start condition exists, go to NO-START DIAGNOSIS in BASIC DIAGNOSTIC PROCEDURES - 2.2L ALERO, CAVALIER, GRAND AM & SUNFIRE article. If no DTCs are present and a driveability condition exists, go to TROUBLE SHOOTING - NO CODES - 2.2L ALERO, CAVALIER, GRAND AM & SUNFIRE - GASOLINE article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.). If vehicle is equipped with 2.2L Bi-Fuel - CNG/Gasoline engine, see SELF-DIAGNOSTICS - 2.2L CAVALIER - BI-FUEL - CNG/GASOLINE article for CNG related problems.