LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Fiat
>>
2012
>>
500 Lounge, Automatic Trans
>>
Repair and Diagnosis (Single Page)
>>
Accessories & Equipment
>>
Communication Devices
>>
Body Control Module (BCM) - DTCS B1084-19 To U1802-08
>>
Diagnosis And Testing
>>
U0121-00-Lost Communication With Anti-Lock Brake System (Abs) Control Module
>>
Possible Causes
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Possible Causes
Possible Causes
CAN C BUS (+) CIRCUIT SHORTED TO VOLTAGE
CAN C BUS (-) CIRCUIT SHORTED TO GROUND
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
BCM NOT CONFIGURED CORRECTLY
ABS POWER AND GROUND
ANTI-LOCK BRAKE MODULE (ABS)
MODULE THAT SET THIS DTC