Speed sensor - Recording unit: no data, link signal - no signal
â–¶ How to fix
Check the sensor cable. Check the sensor itself. Check the tachograph (input B4). Replace any defective components.
What you'll see
Display "sensor fault"
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
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Possible cause
Error during sensor communication. No data signal (B4) or sensor not paired with the tachograph.