Oxygen Sensor Diagnostic Codes

Oxygen Sensor Diagnostic Codes:

Intermittent malfunctions may be responsible for setting diagnostic codes. A vehicle with an intermittent malfunction may appear to be normal when the customer brings the vehicle into the dealership. A malfunction must occur in two consecutive trips to illuminate the check engine light, decreasing the possibility of false codes being set. A test drive, circuit diagnosis and "wiggle check" test may help reveal the condition that is the cause of the code.

Refer to the 1997 Engine Fault Code Diagnostic Manual, The Shop Manual and Electrical Trouble Shooting Manuals for the specific vehicle wiring and circuit information.