Volvo All Engines (2010 Emissions) Fault Code: SPN 84 FMI 13 PID: 84 Wheel-Based Vehicle Speed

This signal is sent from the (VECU) Vehicle Electronic Control Unit to the Cluster to present the actual vehicle speed. It is also used by the maximum speed limitation. The maximum speed limit can vary depending on customer option.

Conditions for diagnostic trouble code (DTC):
1) No vehicle speed available to VECU

Observable symptoms
1) None

Probable cause
1) Vehicle speed sensor
2) Vehicle Control Unit (VECU)

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