CAT 3406E (Prefix 1MM or 2WS) Fault Code: 47 PID: SPN: 71 FMI: 14 PTO Shutdown

Posted by PerDiezel Solutions on January 13, 2026

The ECM detects the following conditions:

•The timer for the PTO has expired and the engine has shut down.

Probable Causes:

1) ECM Connection/Harness
2) PTO timer programmed incorrectly
3) PTO timer operated correctly and shut down as it is programmed to do
4) Check engine light or PTO switch on lamp failure
5) Vehicle speed circuit/sensor
6) PTO switch circuit/sensor

CAT 3406E (Prefix 1MM or 2WS) Fault Code: 47 PID: SPN: 71 FMI: 1 Idle Shutdown

CAT 3406E (Prefix 1MM or 2WS) Fault Code: 46 PID: SPN: 100 FMI: 11 Very Low Oil Pressure

CAT 3406E (Prefix 1MM or 2WS) Fault Code: 46 PID: SPN: 100 FMI: 1 Low Oil Pressure Warning

CAT 3406E (Prefix 1MM or 2WS) Fault Code: 42 PID: SPN: 22 FMI: 13 Engine Speed Signal Calibration Not Performed

CAT 3406E (Prefix 1MM or 2WS) Fault Code: 42 PID: SPN: 22 FMI: 11 Primary to Secondary Engine Speed Signal Calibration

CAT 3406E (Prefix 1MM or 2WS) Fault Code: 41 PID: SPN: 84 FMI: 0 Vehicle Overspeed Warning

WARNING!