Engine Controls - Tests W/Codes - OBD-II (1.5L): Introduction: Notes

NOTE: If no faults were found while performing steps in BASIC TESTING - 1.5L , proceed with self-diagnostics. If no trouble codes or only pass codes are present after entering self-diagnostics, go to TESTS W/O CODES - 1.5L article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).