Voltage supply
â–¶ How to fix
Check the circuit for short circuits or interruptions and ensure that the vehicle has sufficient battery capacity and alternator charging.If the fault is internal, the tachograph must be renewed.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The voltage supply to the tachograph has been lost or has been too low.
Possible cause
Short circuit or open circuit in the tachograph circuit. The fault code can also be set if the voltage level falls when loaded due to too low battery capacity.This can occasionally be due to an internal fault in the tachograph.