Detroit DD16 GHG14 (2014-16) Fault Code: SPN 191 FMI 19 (CPC) Transmission Output Speed Shaft Signal is Erratic

DESCRIPTION:
J1939 Transmission Output Shaft Speed Signal is erratic.

MONITORED PARAMETER:
CAN Communication

TYPICAL ENABLING CONDITIONS:
Always enabled

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Always enabled

TYPICAL DURATION:
2

DASH LAMPS:
MIL

ENGINE REACTION:
None

VERIFICATION:
Engine Idle: One minute.

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…).