Mike's Workshop Manuals
: Service manuals for every vehicle
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Viper Base
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Repair and Diagnosis
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Radio Frequency (RF Hub) Module
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Diagnosis And Testing
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U0121-00-Lost Communication With Anti-Lock Brake System (Abs) Control Module
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Possible Causes
Possible Causes
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