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Home >> Chrysler >> 2008 >> 300 LX >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0579 To P0645 >> P0627-Fuel Pump Relay Circuit >> Possible Causes

Possible Causes

Possible Causes 
INTERMITTENT DTC
(A109) FUSED B(+) CIRCUIT OPEN OR HIGH RESISTANCE
(F20) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN OR HIGH RESISTANCE
(K31) FUEL PUMP RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE
(K31) FUEL PUMP RELAY CONTROL CIRCUIT SHORTED TO GROUND
(K31) FUEL PUMP RELAY CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
FUEL PUMP RELAY
POWERTRAIN CONTROL MODULE (PCM)

Perform *PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .