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Home >> Jeep >> 2007 >> Grand Cherokee Laredo, 3.0 M >> Repair and Diagnosis >> Engine Performance >> System >> Diesel - DTCS P0277 To P0472 >> P0471-Exhaust Pressure Sensor 1 Performance >> Possible Causes

Possible Causes

Possible Causes 
INTERMITTENT DTC
(F858) EXHAUST GAS PRESSURE SENSOR 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
(K35) EXHAUST GAS PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
(K934) EXHAUST GAS PRESSURE SENSOR GROUND CIRCUIT SHORTED TO VOLTAGE
(F858) EXHAUST GAS PRESSURE SENSOR 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
(K35) EXHAUST GAS PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
(F858) EXHAUST GAS PRESSURE SENSOR 5 VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE
(K35) EXHAUST GAS PRESSURE SENSOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
(K934) EXHAUST GAS PRESSURE SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE
EXHAUST GAS PRESSURE SENSOR
ENGINE CONTROL MODULE (ECM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.