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EGR Valve Position Sensor Circuit – Voltage Above Normal or Shorted to High Source
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 2271 PID: P027 SPN: 27 FMI: 3/3 LAMP: Amber SRT: |
Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at the EGR valve position sensor circuit. |
Possible low power. Power will be removed from the EGR valve motor. |
 EGR Valve Position Sensor Circuit
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Circuit Description
The exhaust gas recirculation (EGR) valve position sensor outputs a voltage signal to the electronic control module (ECM). The ECM converts this signal into a percentage value, 0 to 100, indicating valve position. A fully-open valve is equivalent to 100 percent.
Component Location
The EGR valve position sensor is located on the EGR valve assembly. Refer to Procedure 100-002 for a detailed component location view.
Shop Talk
The EGR valve position sensor shares Supply and Return wires in the engine harness with other sensors. Open circuits and short circuits in the engine harness can cause multiple fault codes to be active.
Possible causes of this fault code include:
- Open return in the harness, connectors, or sensor
- SIGNAL wire shorted to sensor supply or battery voltage
- Failed EGR valve position sensor
- Failed ECM.
Refer to Troubleshooting Fault Code t05-2271.
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