Technical Definition:
System Too Lean (Bank 1)
Trouble Code: P0171
Address: 0x0171
System: Powertrain
Subsystem:
Address: 0x0171
System: Powertrain
Subsystem:
Technical Description:
Possible Causes:
Possible Symptoms:
System Too Lean Bank 1
Possible Solutions:
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– 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
Specific Makes:
– Excessive Fuel Consumption