CAN Message MD_IND Invalid (FFh)

DTC P1884
CAN Message MD_IND invalid (FFh).

Possible causes:
- Torque measurement fault present in engine management ECM.

Torque measurement fault present in engine management ECM.
CHECK THE FOLLOWING:
- Read ECM fault codes and diagnose any faults likely to cause problems with torque measurement (e.g. Airflow, Load, Engine speed, temperature).
POSSIBLE FAULTS
- Fault codes set in engine management ECM.