Vehicle speed
â–¶ How to fix
Check and rectify the primary cause of the fault in the tachograph. If the vehicle is not equipped with a tachograph, the coordinator will carry out its function. If this is the case, check and rectify the primary cause of the fault in the coordinator.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
There has been a fault in the vehicle speed signal.
Possible cause
A fault has occurred in the tachograph.