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Home >> Fiat >> 2014 >> 500 Turbo >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Antilock Brake System (Abs) - Electrical Diagnostics - 500 & 500C >> Diagnosis And Testing >> C1221-86-Pcm Bus Signal Invalid >> Possible Causes

Possible Causes

Possible Causes
CAN BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
POWERTRAIN CONTROL MODULE POWER AND GROUND
BCM NOT CONFIGURED CORRECTLY
POWERTRAIN CONTROL MODULE (PCM)
MODULE THAT SET THIS DTC
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