CAT 3126E Fault Code: 186-14 PID: Flash Code 47 SPN: FMI: PTO Engine Shutdown Switch Occurrence

Posted by PerDiezel Solutions on January 12, 2026

All of the following conditions must be met.

•The parameter “PTO Configuraton” is programmed to “Cab Switches”, “Remote Switches”, or “Remote Throttle”.
•The PTO switch is on the ON position.
•The parameter “PTO Engine Shutdown Switch” is programmed to “J1/P1:7” or “J1/P1:23”.
•The PTO engine shutdown switch is off and the PTO switch is active for 0.5 seconds.
•The PTO engine shutdown switch changes condition for 0.5 seconds.

If the vehicle speed is not equal to zero, or if there are active vehicle speed faults, the engine will go to low idle. The engine will not shut down when the vehicle speed falls to zero. When the PTO engine shutdown switch is pressed, a 186-14 will become active. The code will stay active until the engine shuts down. When the engine shuts down, the code will be logged.

Possible Causes:

1) ECM Connection/Harness
2) PTO Shutdown Switch Failure
3) ECM Failure
4) Wiring between PTO shutdown switch and ECM

CAT 3126E Fault Code: 71-14 PID: Flash Code 47 SPN: FMI: PTO Shutdown

CAT 3126E Fault Code: 71-01 PID: Flash Code 47 SPN: FMI: Idle Shutdown Occurrence

CAT 3126E Fault Code: 100-11 PID: Flash Code 46 SPN: 100 FMI: 18 Very Low Oil Pressure

CAT 3126E Fault Code: 128-04 PID: Flash Code 44 SPN: FMI: Secondary Fuel level voltage low

CAT 3126E Fault Code: 128-03 PID: Flash Code 44 SPN: FMI: Secondary Fuel Level voltage high

CAT 3126E Fault Code: 22-13 PID: Flash Code 42 SPN: 637 FMI: 13 Engine Speed Signal Calibration Not Performed

WARNING!