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Home >> Jeep >> 2024 >> Wagoneer Carbide, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 53 (3.0L - DTCS U05AA-00 To U11E9-00) >> DTC Troubleshooting >> U0645-00-Lost Communication With Active Air Dam Module >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2024 Jeep Grand Wagoneer L and 2024 Jeep Grand Wagoneer. However, it is still accessible from the selected car via links, so may be relevant.
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  .