Tachograph internal fault
â–¶ How to fix
1) If 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
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System reaction
* Event/Fault data 0x31 is stored in the tachograph. * Warning displayed in the tachograph display. * System event in TCO1 CAN message is set to active. * Tachograph warning displayed in the instrument cluster.
Diagnostic depth
Detection
Internal fault in tachograph (built-in/self-test or EEPROM error).
Possible cause
Tachograph internal fault.