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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 315 (Body Control Module (BCM) - DTCS B1815-11 To U1433-24 - 1500) >> Diagnosis And Testing >> U0121-00-Lost Communication With Anti-Lock Brake System (Abs) Control Module >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2013 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
ANTI-LOCK BRAKE SYSTEM MODULE (ABS) POWERS AND GROUNDS
ANTI-LOCK BRAKE SYSTEM MODULE (ABS)
CAN C BUS (+) CIRCUIT OPEN
CAN C BUS (-) CIRCUIT OPEN
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