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Nissan-Datsun
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2020
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Qashqai SL
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System (DTCS) (3 Of 10)
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DTC Diagnosis
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Engine (ECM)
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DTC P0171: Fuel Injection System Function
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DTC Description
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Possible Cause
Possible Cause
Intake air leakage
A/F sensor 1
Fuel injector
Exhaust gas leakage
Incorrect fuel pressure
Lack of fuel
Mass air flow sensor
Incorrect PCV hose connection