Probable Causes

*  Loose Engine Ground Bolt

*  Open E1 Circuit

*  Short In Injector Circuit Or Injector

*  Fuel Pressure (Leaking Injector)

*  Open Or Short In Cold Start Injector Or Circuit

*  Open Or Short In Oxygen Sensor Or Circuit

*  Coolant Temperature Sensor

*  Compression Pressure

*  Vacuum Sensor

*  ECU

For oxygen sensor and circuit testing, see Code 21. For injector or circuit testing, see TEST NO . 12.