The ECM detects the following conditions: •The duty cycle for the accelerator pedal position sensor is less than 5 percent or the duty cycle is greater than 95 percent 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 1MM or 2WS) Fault Code: 28 PID: SPN: 91 FMI: 13 Throttle Sensor out of calibration CAT 3406E (Prefix 1MM or 2WS) Fault Code: 27 PID: SPN: 110 FMI: 4 Coolant Temperature voltage low CAT 3406E (Prefix 1MM or 2WS)...

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 correctly3) Vehicle speed sensor4) Vehicle speed sensor wiring5) ECM Connection/Harness6) Speedometer failure7) ECM Failure CAT 3406E (Prefix 1MM or 2WS) Fault Code: 29 PID: SPN: 30 FMI: 13 PTO Throttle out of calibration CAT 3406E (Prefix 1MM or 2WS) Fault...

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 correctly3) Vehicle speed sensor4) Vehicle speed sensor wiring5) ECM Connection/Harness6) Speedometer failure7) ECM Failure CAT 3406E (Prefix 1MM or 2WS) Fault Code: 31 PID: SPN: 84 FMI: 1 Vehicle Speed loss of signal CAT 3406E (Prefix 1MM or 2WS) Fault...

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 1MM or 2WS) Fault Code: 31 PID: SPN: 84 FMI: 1 Vehicle Speed loss of signal CAT 3406E (Prefix 1MM or 2WS) Fault Code: 31 PID: SPN: 84 FMI: 1 Vehicle Speed loss of signal CAT 3406E...

The Engine Control Module (ECM) detects the following conditions: •Actual boost is less than desired boost by more than 30 kPa (4.4 psi) for more than eight seconds.•The current for the turbocharger solenoid is greater than 80% of the maximum value.•Desired boost is not ZERO.•The ECM has been powered for at least two seconds. The wastegate solenoid allows the engine to more precisely regulate the boost pressure to the engine. By closing or partially closing the wastegate solenoid, the ECM can increase the boost pressure. Typical wastegates will limit boost pressure to a preset limit. The wastegate solenoid blocks air...