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Home >> Fiat >> 2018 >> 500 Lounge, Automatic Trans >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> (Antilock Brake System (Abs) Electrical Diagnostics - 500 - Except Electric) >> DTC Troubleshooting >> C1221-86-Pcm Bus Signal Invalid >> Possible Causes

Possible Causes

Possible Causes
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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