The Engine Control Module (ECM) detects the following conditions: •The signal frequency from the accelerator pedal position sensor is less than 150 Hz or the signal frequency is greater than 1050 Hz for more than two seconds.•The ECM has been powered for at least three seconds. Probable Causes: 1) ECM Connection/Harness2) Accelerator Position Sensor3) Accelerator Position Sensor Harness4) ECM Failure CAT 3406E (Prefix 5DS or 1LW) Fault Code: 31 PID: 84 SPN: FMI: 1 Vehicle Speed loss of signal CAT 3406E (Prefix 5DS or 1LW) Fault Code: 29 PID: 30 SPN: FMI: 13 PTO Throttle out of calibration CAT 3406E...

The Engine Control Module (ECM) detects the following conditions: •The primary engine speed/timing signal was lost and then returned within one second.•The engine has been running for more than three seconds.•The engine speed did not pass through the 350 to 500 rpm range.•Battery voltage is greater than 9 VDC prior to the short or open circuit condition. Probable Causes: 1) Fuel system restriction (Uncommon, but possible)2) If speedometer is not accurate, then ECM is not programmed correctly3) Vehicle speed sensor4) Vehicle speed sensor wiring5) ECM Connection/Harness6) Speedometer failure7) ECM Failure CAT 3406E (Prefix 5DS or 1LW) Fault Code: 32 PID:...

Conditions Which Generate This Code: The engine speed exceeded 2600 rpm for more than one second. This is not a diagnostic code, but a warning code. Talk to driver to see why this happened. CAT 3406E (Prefix 5DS or 1LW) Fault Code: 34 PID: 190 SPN: FMI: 2 Primary Engine Speed Loss of Signal CAT 3406E (Prefix 5DS or 1LW) Fault Code: 32 PID: 91 SPN: FMI: 8 Throttle Position Invalid CAT 3406E (Prefix 5DS or 1LW) Fault Code: 31 PID: 84 SPN: FMI: 1 Vehicle Speed loss of signal CAT 3406E (Prefix 5DS or 1LW) Fault Code: 29 PID:...

The ECM detects the following conditions: •The vehicle speed signal changes more than 5 MPH on eight consecutive readings in three seconds.•The engine speed is greater than the programmed “VSL Protection” minus 100 rpm.•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 correctly3) Vehicle speed sensor4) Vehicle speed sensor wiring5) ECM Connection/Harness6) Speedometer failure7) ECM Failure CAT 3406E (Prefix 5DS or 1LW) Fault Code: 36 PID: 84 SPN: FMI: 8 Vehicle Speed signal out of...

The ECM detects the following conditions: •The vehicle speed signal indicates a constant MPH.•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 correctly3) Vehicle speed sensor4) Vehicle speed sensor wiring5) ECM Connection/Harness6) Speedometer failure7) ECM Failure CAT 3406E (Prefix 5DS or 1LW) Fault Code: 35 PID: 190 SPN: FMI: 0 Engine Overspeed Warning CAT 3406E (Prefix 5DS or 1LW) Fault Code: 34 PID: 190 SPN: FMI: 2 Primary Engine Speed Loss of Signal CAT 3406E...