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Home >> Jeep >> 2023 >> Wagoneer Carbide, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 26 (5.7L - DTCS U0416 To U1186) >> DTC Troubleshooting >> U0645-Lost Communication With Active Air Dam Module >> 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 AIR DAM FUSED B+ CIRCUIT OPEN
ACTIVE AIR DAM FUSED B+ CIRCUIT SHORTED TO GROUND
ACTIVE AIR DAM GROUND CIRCUIT OPEN
ACTIVE AIR DAM (AAD) ASSEMBLY
POWERTRAIN CONTROL MODULE

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