No CAN1 communication
â–¶ How to fix
Check whether other units connected to the same CAN bus receive CAN data. Check the continuity in the cable harness with a multimeter.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
No CAN communication from the vehicle's CAN bus (1). The fault code is activated when no CAN data has been received for 30 s and the vehicle speed exceeds 40 km/h.
Possible cause
Fault on CAN bus cable harness, connections or terminals. Incorrect CAN messages may have been sent from other control units.