Possible Cause
DTC P0171
- Intake air leaks
- A/F Sensor 1 (bank 1)
- Fuel injector
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass Air Flow Sensor
- Incorrect PCV hose connection
DTC P0174
- Intake air leaks
- A/F Sensor 1 (bank 2)
- Fuel injector
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass Air Flow Sensor
- Incorrect PCV hose connection