Electrical error on Brown CAN bus (CAN1 BusOff)
â–¶ How to fix
Trouble shoot CAN bus cable harness and connectors
What you'll see
Systems that communicate on the brown CAN often have major function disturbances.
System reaction
Functions dependent on information from brown CAN bus are degraded or disabled.
Diagnostic depth
Detection
The CAN-controller of the brown CAN bus has entered state bus-off, which indicates a communication error. There is a short circuit on the brown CAN bus.
Possible cause
• Defect wiring of brown CAN-bus: - short circuit between CAN-high and CAN low. - short circuit between CAN-high and supply voltage. - short circuit between CAN-high and ground. - short circuit between CAN-low and supply voltage. - short circuit between CAN-low and ground. • Defect ECU unit(s) on the brown CAN-bus.