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Home >> Jeep >> 2021 >> Gladiator Mojave, Part Time T/Case Control, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> 3.6L (GPEC 5) - DTCS P2299 To U0129 >> DTC Troubleshooting >> P2457-Exhaust Gas RECIRCULATION Cooling System Performance >> Possible Causes

Possible Causes

Possible Causes
ENGINE COOLANT LOW
HIGH RESISTANCE IN THE EGR TEMPERATURE SENSOR SIGNAL CIRCUIT
HIGH RESISTANCE IN THE SENSOR GROUND CIRCUIT
EGR COOLER ASSEMBLY RESTRICTED
INTERNAL OR EXTERNAL CRACK IN THE EGR COOLER ASSEMBLY

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