CAT 3406E (Prefix 5DS or 1LW) Fault Code: 31 PID: 84 SPN: FMI: 1 Vehicle Speed loss of signal

The ECM detects the following conditions:

The vehicle speed signal indicates that the vehicle speed is 0 MPH.
Desired engine speed is greater than the programmed "VSL Protection".
The "VSL Protection" parameter is programmed to a value that is less than 2120 rpm.

Probable Causes:

1) Fuel system restriction (Uncommon, but possible)
2) If speedometer is not accurate, then ECM is not programmed correctly
3) Vehicle speed sensor
4) Vehicle speed sensor wiring
5) ECM Connection/Harness
6) Speedometer failure
7) ECM Failure

CAT 3406E (Prefix 5DS or 1LW) Fault Code: 29 PID: 30 SPN: FMI: 13 PTO Throttle out of calibration

CAT 3406E (Prefix 5DS or 1LW) Fault Code: 29 PID: 30 SPN: FMI: 8 PTO Throttle signal invalid

CAT 3406E (Prefix 5DS or 1LW) Fault Code: 28 PID: 91 SPN: FMI: 13 Throttle Position out of calibration

CAT 3406E (Prefix 5DS or 1LW) Fault Code: 27 PID: 110 SPN: FMI: 4 Coolant Temperature voltage low

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