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Home >> Jeep >> 2023 >> Grand Cherokee Summit 4xe >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - DTCS P0401 To P04C1 >> DTC Troubleshooting >> P0402 EGR Flow Excessive Detected >> Possible Causes

Possible Causes

Possible Causes
EGR VALVE STUCK OPEN
EGR SYSTEM LEAK
EGR VALVE ASSEMBLY

Always perform the Pre-Diagnostic TROUBLESHOOTING PROCEDURE BEFORE PROCEEDING. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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