Possible Causes
- Electrical Cause
- Mechanical Cause
- Monitor Description
- Inferred mixture strength (Lambda) above threshold, (leaner mixture)
- Prioritized List of Possible Causes
- Connector is disconnected, connector pin is backed out, connector pin corrosion
- Fuel injector circuit short circuit to ground, short circuit to power, open circuit, high resistance
- Intake manifold air leak
- Fuel injector external fuel leak
- Fuel injector restricted
- Fuel rail restricted
- Air leak around the spark plug
- Air leak around the fuel injector
- Fuel injector failure
- Ignition coil failure
- Camshaft profile switching system failure