Sensor internal error
â–¶ How to fix
1) Pair another motion sensor with the tachograph and check if it is working. 2) If the other motion sensor is working, replace the faulty motion sensor and perform a calibration of the tachograph system.
What you'll see
tbd
System reaction
* Event/Fault data 0x20 or 0x21 or 0x22 are stored in 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
* Sensor internal error * Sensor authentication failure * Sensor stored data integrity failure
Possible cause
Internal fault in the motion sensor.