CAN Message V3 (Road Speed) Invalid (FFh)

DTC P1884
CAN message V3 (road speed) invalid (FFh).

Possible cause:
^ Road speed measurement fault present in engine management ECM.

Road Speed Measurement Fault Present In Engine Management ECM.
CHECK THE FOLLOWING:
^ Read ECM fault codes and diagnose any road speed measurement faults.
POSSIBLE FAULTS
^ Fault codes set in engine management ECM.