1235-9 : J1939 Network #3 : Abnormal Update Rate
The Pump and Electronics Unit (PEU), the ammonia sensor, the soot sensor, or a NOx sensor has incorrectly stopped or started transmitting a data request.
The ECM will log the diagnostic code.
5246-16: Aftertreatment SCR Operator Inducement Severity : High - moderate severity (2) **this code is a direct result of the above 1235-9 code.
190-15: Level 1 The engine has exceeded the value that is programmed into the Electronic Control Module (ECM) for 0.6 seconds.
There are no diagnostic trouble codes for the speed/timing sensors.
The engine has been running for at least 3 seconds.
I would say you are going to have to get CAT ET hooked to the machine to determine which sensor on the J1939 is causing the problem.