TACHO ECU - Error value received
â–¶ How to fix
Check the sender ECU (Tachograph ECU) for primary DTC(s).
What you'll see
No driver-visible symptom recorded.
System reaction
Motion state estimation is working with less available inputs. Yellow warning lamp.
Diagnostic depth
Detection
One or more messages contains error value(s) sent by the sender ECU.
Possible cause
Primary DTC in sender ECU (Tachograph ECU).