Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Dodge and Ram >> 2013 >> Durango SXT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 251 ((Transmission Control Module (TCM) - Electrical Diagnostics)) >> DTC Troubleshooting >> U0121-Lost Communication With Anti-Lock Brake Module >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2012 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
TRANSMISSION CONTROL MODULE (TCM)

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

scientia non olet · About Mike's Workshop Manuals