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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1649 ((Rear Air Suspension Control Module (ASCM) - Electrical Diagnostics - 2500 Hd)) >> DTC Troubleshooting >> U0438-00-Implausible Data Received From Trailer Control Module >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
AIR SUSPENSION CONTROL MODULE (ASCM) CAN BUS DTCS
INTEGRATED TRAILER BRAKE MODULE (ITBM) DTCS
POWERTRAIN CONTROL MODULE (PCM) DTCS
AIR SUSPENSION CONTROL MODULE (ASCM)

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