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Home >> Jeep >> 2021 >> Grand Cherokee L Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (5.7L - DTCS U0155 To U1494) >> DTC Troubleshooting >> U11E9-Lost Communication With AGS >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
LIN BUS CIRCUIT SHORTED TO GROUND
LIN BUS CIRCUIT OPEN/HIGH RESISTANCE
ACTIVE GRILL SHUTTER FUSED B+ CIRCUIT OPEN
ACTIVE GRILL SHUTTER FUSED B+ CIRCUIT SHORTED TO GROUND
ACTIVE GRILL SHUTTER GROUND CIRCUIT OPEN
ACTIVE GRILL SHUTTER (AGS) ASSEMBLY
POWERTRAIN CONTROL MODULE

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