FixVault
Home
›
Jeep
›
2014
›
Compass Limited, AWD, Automatic Trans
›
Repair and Diagnosis
›
Steering
›
Steering Control Systems
›
(Steering Control Module (SCM) - Electrical Diagnostics)
›
DTC Troubleshooting
›
U0121-Lost Communication With Abs
›
Possible Causes
Possible Causes
Possible Causes
CAN BUS CIRCUITS OPEN OR SHORTED
ABS MODULE
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
TOTALLY INTEGRATED POWER MODULE POWER AND GROUND
TIPM NOT CONFIGURED CORRECTLY
TOTALLY INTEGRATED POWER MODULE (TIPM)
MODULE THAT SET THIS DTC