CAN communication
â–¶ How to fix
Check whether more fault codes affecting the yellow CAN bus have been registered.Check the yellow CAN bus cable harness and connectors and measure the voltage level. Check the power supply and ground. If necessary, use the description for Communication Problems available under "Help" in SDP3.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The tachograph detects that it is receiving incorrect data on the yellow CAN bus.
Possible cause
There may be an open circuit or poor contact in the cable harness for the yellow CAN bus.Internal fault in the tachograph.