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Home >> Infiniti >> 2020 >> Q50 Pure, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (6 Of 19) >> DTC Diagnosis >> Engine (ECM) >> DTC P0171: Fuel Injection System Function >> DTC Description - VR30DDTT Engine >> Possible Cause

Possible Cause

Intake air leaks
A/F sensor 1
Fuel injector
Exhaust gas leaks
Incorrect fuel pressure
Lack of fuel
Mass air flow sensor
Incorrect PCV hose connection

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