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Home >> Jeep >> 2013 >> Compass Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 174 ((Transmission Control Module (TCM) - Electrical Diagnostics)) >> DTC Troubleshooting >> U1508-Implausible Message Data Length Received From ESM >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2012 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
CAN BUS DTCS PRESENT
ELECTRONIC SHIFT MODULE DTCS PRESENT
TRANSMISSION CONTROL MODULE (TCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE  .