Cummins ISL CM850 (2003-06) Fault Code: 131 PID: 91 SPN: 91 FMI: 3 Accelerator Pedal or Lever Position Sensor Circuit - Shorted High. High voltage detected at accelerator pedal or lever position circuit.

If troubleshooting an intermittent accelerator problem:

The accelerator pedal or lever position sensor signal voltage can be monitored with the INSITE? electronic service tool, while flexing the harness to locate the intermittent connection.

Possible causes:

1)Accelerator pedal or lever position signal circuit shorted to battery or +5 VDC supply
2)Open accelerator pedal or lever return circuit in the harness or connections
3)Accelerator supply shorted to battery
4)Failed accelerator pedal or lever position sensor.

NOTE: The three wires in the accelerator position sensor circuit must be twisted together.

Possible repairs:

1)Replace the accelerator pedal or lever.
2)Replace the accelerator pedal or lever.
3)Replace the ECM.

Cummins ISL CM850 (2003-06) Fault Code: 124 PID: 102 SPN: FMI: 0 Intake Manifold 1 Pressure Sensor Circuit - Data Valid But Above Normal Operating Range - Moderately Severe Level. Intake manifold pressure has exceeded the maximum limit for the given engine rating.

Cummins ISL CM850 (2003-06) Fault Code: 123 PID: 102 SPN: 102 FMI: 4 Intake Manifold Pressure Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the intake manifold pressure circuit.

Cummins ISL CM850 (2003-06) Fault Code: 122 PID: 102 SPN: 102 FMI: 3 Intake Manifold Pressure Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at the intake manifold pressure circuit.

Cummins ISL CM850 (2003-06) Fault Code: 115 PID: 190 SPN: 612 FMI: 2 Engine Magnetic Crankshaft Speed/Position Lost Both of Two Signal - Data Erratic, Intermittent, or Incorrect. The ECM has detected that the primary engine speed sensor and the backup engine speed sensor signals are reversed.

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