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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - DTCS P2AE2-00 To U148C-00 >> DTC Troubleshooting >> P304A-00-Fuel Rail Pressure Sensor 1 - Out Of Range High >> Possible Causes

Possible Causes

Possible Causes
HIGH RESISTANCE IN THE 5-VOLT SUPPLY CIRCUIT
HIGH RESISTANCE IN THE FUEL RAIL PRESSURE SIGNAL 1 CIRCUIT
HIGH RESISTANCE IN THE SENSOR GROUND CIRCUIT
FUEL RAIL PRESSURE SENSOR

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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