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Home >> Jeep >> 2007 >> Grand Cherokee Laredo, 3.0 M >> Repair and Diagnosis >> Engine Performance >> System >> Diesel - DTCS P0277 To P0472 >> P0463-Fuel Level Sensor 1 Circuit High >> Possible Causes

Possible Causes

Possible Causes 
INTERMITTENT DTC
(N4) FUEL LEVEL SENSOR NO. 1 SIGNAL CIRCUIT SHORTED TO VOLTAGE
(Z210) GROUND CIRCUIT SHORTED TO VOLTAGE
(N4) FUEL LEVEL SENSOR NO. 1 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
(Z210) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
FUEL PUMP
INSTRUMENT CLUSTER (CCN)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.