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Home >> Jeep >> 2010 >> Wrangler X >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Air Bag Restraint System - Electrical Diagnostics >> DTC Troubleshooting >> DTC U0121: Lost Communication With Anti-Lock Brake System (Abs) Control Module >> Possible Causes
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Possible Causes

Possible Causes 
(D65) CAN C BUS (+) CIRCUIT SHORTED TO VOLTAGE
(D64) CAN C BUS (-) CIRCUIT SHORTED TO GROUND
DTCs RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
TIPM NOT CONFIGURED CORRECTLY
ANTILOCK BRAKE MODULE POWER AND GROUND
ANTILOCK BRAKE MODULE
OCCUPANT RESTRAINT CONTROLLER (ORC)