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Home >> Fiat >> 2017 >> 500 c Pop, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 39 ((Transmission Control Module (TCM) - Electrical Diagnostics - 500)) >> DTC Troubleshooting >> U0077-00 Control Module Communication Bus Off >> Possible Causes
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Possible Causes

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