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Home >> Dodge and Ram >> 2021 >> ProMaster 2500 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> (Body Control Module (BCM) - Electrical Diagnostics) >> DTC Troubleshooting >> B12C9-86-BSM (Brake System Control Module) Vehicle Speed Failure - Signal Invalid >> Set Condition
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Set Condition

Whenever the communication data sent over the CAN BUS from the Anti-Lock Brake Module (ABS) is missing part of the message, the message is corrupted, or the message is an irrational value.