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Home >> Fiat >> 2012 >> 500c Pop, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 68 ((Transmission Control Module (TCM) - Electrical Diagnostics) >> Diagnosis And Testing >> U0121-Lost Communication With Anti-Lock Brake System (Abs) Control Module >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2013 Fiat 500c and 2013 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
CAN BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
BRAKING SYSTEM MODULE (BSM) POWER AND GROUND
BODY CONTROL MODULE (BCM) NOT CONFIGURED CORRECTLY
BRAKING SYSTEM MODULE (BSM)
MODULE THAT SET THIS DTC