CAN Message T_ANS Invalid (FFh)

DTC P1884
CAN Message T_ANS invalid (FFh).

Possible cause:
^ Air intake temperature measurement fault present in engine management ECM.

Air Intake Temperature Measurement Fault Present In Engine Management ECM.
CHECK THE FOLLOWING:
^ Read ECM fault codes and diagnose any faults likely to cause problems with air intake temperature measurement.
POSSIBLE FAULTS
^ Fault codes set in engine management ECM.