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Home >> Fiat >> 2014 >> 500 Lounge, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 1.4L - I4 Non-Turbo - DTCS P0016-00 To P0354-00 - 500 & 500C >> Diagnosis And Testing >> P0271-00-Injector 4 Control Circuit High >> Possible Causes

Possible Causes

Possible Causes
FUEL INJECTOR 4 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
FUEL INJECTOR 4 SIGNAL CIRCUIT SHORTED TO ASD RELAY OUTPUT CIRCUIT
ASD RELAY OUTPUT CIRCUIT OPEN
FUEL INJECTOR 4
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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