Voltage supply
â–¶ How to fix
Check the circuit for short circuits or breaks and ensure that the vehicle has sufficient battery capacity and alternator charging.
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 missing or has been too low.
Possible cause
Short circuit or open circuit in the tachograph power supply. The fault code can also be generated if the voltage level drops when exerted to loading due to insufficient battery capacity or if the batteries have been disconnected.