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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 612 (Radio Frequency (RF Hub) Module - Electrical Diagnostics - 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 2014 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
CAN C BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
ANTI LOCK BRAKE MODULE (ABS) POWER AND GROUND
BCM NOT CONFIGURED CORRECTLY
ANTI LOCK BRAKE MODULE (ABS)
MODULE THAT SET THIS DTC