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Accelerator Pedal or Lever Position Sensor Circuit – Shorted High
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 131 PID: P091 SPN: 91 FMI: 3/3 LAMP: Red SRT: |
Accelerator Pedal or Lever Position Sensor Circuit – Shorted High. High voltage detected at accelerator pedal or lever position circuit. |
Automotive: Severe derate in power output of the engine. Limp home capability only. Marine: Severe derate in engine speed. Limp home capability only. |
 Accelerator Pedal or Lever Position Sensor Circuit
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Circuit Description
The accelerator pedal or lever position sensor is attached to the accelerator pedal or lever. The accelerator pedal or lever position sensor sends a signal to the electronic control module (ECM) when the accelerator pedal or lever is depressed and released. The accelerator pedal or lever position circuit contains three wires: Accelerator Pedal or Lever Position +5 VDC Supply, Accelerator Pedal or Lever Position Return, and Accelerator Pedal or Lever Position Signal.
Component Location
The accelerator pedal or lever position sensor is located on the accelerator pedal or lever. Refer to the OEM manual.
Shop Talk
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 of this fault include:
- Accelerator pedal or lever position signal circuit shorted to battery or +5 VDC supply
- Open accelerator pedal or lever return circuit in the harness or connections
- Accelerator supply shorted to battery
- Failed accelerator pedal or lever position sensor.
NOTE: The three wires in the accelerator position sensor circuit must be twisted together.
Refer to Troubleshooting Fault Code t05-131
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