DTC Confirmation Test

Malfunction is detected when mixture ratio compensation amount is too large (mixture is too lean or too rich). Possible causes are:

• Intake air leaks.
• Defective front HO2S.
• Defective injectors.
• Exhaust leaks.
• Fuel pressure incorrect.
• Lack of fuel.
• Defective Mass Airflow (MAF) sensor.

To set DTC, start engine and warm to normal operating temperature. Turn ignition off and wait at least 10 seconds. Disconnect MAF sensor harness connector located near air cleaner housing. Start engine and let it idle for at least 3 seconds. Turn ignition off and reconnect MAF sensor harness connector. Select MODE 7 and ensure DTC P0100 is set. Select MODE 4 and erase DTC. Start engine and let it idle for at least 10 minutes. Select MODE 7. If engine does not start, fuel injection system has a malfunction. Attempt to start engine while depressing accelerator pedal. If engine still does not start, check for intake or exhaust leaks or spark plug fouling.