Detroit DD15 GHG14 (2014-16) Fault Code: SPN 191 FMI 9 (CPC) J1939 ETC1 Message is Missing

NOTE: Fault will set during the transmission module reprogramming. If fault occurs while programming, clear code and release vehicle.

PROBABLE CAUSES:
1. If battery fault codes present, fix this first.
2. If any programming done recently on the engine, it may be incorrect.
3. Check other computers on truck for failures (ABS, Transmission, cab controller, etc…).