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Home >> Jeep >> 2023 >> Grand Cherokee 4xe >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - DTCS P253F To U0109 >> DTC Troubleshooting >> P3074 EVAP System Pressure Sensor / Switch Rationality >> Possible Causes

Possible Causes

Possible Causes
HIGH RESISTANCE IN THE 5-VOLT SUPPLY CIRCUIT
HIGH RESISTANCE IN THE FUEL TANK PRESSURE SIGNAL CIRCUIT
HIGH RESISTANCE IN THE SENSOR GROUND CIRCUIT
FUEL TANK PRESSURE SENSOR
POWERTRAIN CONTROL MODULE

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

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