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Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit – Voltage Below Normal or Shorted to Low Source
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 443 PID: S221 SPN: 1043 FMI: 4/4 LAMP: Amber SRT: |
Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at sensor supply circuit to the accelerator pedal or lever position sensor. |
Automotive: Engine will only die. Marine: Severe derate in engine speed. Limp home capability only. |
 Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit
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Circuit Description
The electronic control module (ECM) supplies the accelerator with +5 VDC. If the supply circuit to the accelerator is damaged, the accelerator will not work correctly.
Component Location
For Automotive applications, the accelerator pedal or lever is located in the cab.
For Marine applications, the accelerator lever is typically located in the engine compartment or the helm.
Shop Talk
Low voltage on the +5 VDC supply line can be caused by a short circuit to ground in the supply line, a short circuit between the supply line and return circuit, a failed accelerator, or a failed ECM power supply.
Refer to Troubleshooting Fault Code t05-443
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