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Home >> Jeep >> 2011 >> Compass Base, 2.0 A, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 73 ((Transmission Control Module (TCM) Electrical Diagnostics - CVT Automatic Transmission) - MK) >> DTC Troubleshooting >> U0121 - Lost Communication With Antilock Brake Module >> Set Condition

Set Condition

WARNING: This page is about a different car, the 2017 Jeep Patriot and 2017 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.

A loss of CAN Bus communication between the TCM and ABS for the period of 2.0 seconds.

Refer to TOTALLY INTEGRATED POWER MODULE (TIPM) - DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.

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