P0171 Nissan - Fuel Injection System Too Lean Bank 1
Possible causes
- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection
Check all tune related items, blocked air or fuel filter, worn spark plugs and vacuum leaks,
Start here.
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Friday, November 21st, 2014 AT 2:42 AM