Tachograph power supply high
â–¶ How to fix
1) Check vehicle power supply levels. 2) Check power supply input to tachograph. 3) Check cable harness and tachograph operation. 4) Replace defective components OR 5) If no error found and error remains despite repetitive acknowledgement, replace the tachograph and pair the motions sensor with the tachograph and perform a new calibration of the tachograph system.
What you'll see
tbd
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
Tachograph power supply voltage above 38 V for more than 4 seconds.
Possible cause
* Over voltage. * Fault in cable harness.