EGR Valve Position Sensor Circuit – Voltage Below Normal or Shorted to Low Source
|Fault Code: 2272
Exhaust Gas Recirculation (EGR) valve position circuit – voltage below normal or shorted to low source. Low 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
The 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.
The EGR valve position sensor is located on the EGR valve assembly. 100-002 for a detailed component location view.
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 for this fault code include:
- SIGNAL circuit open or shorted to ground
- SUPPLY circuit open or shorted to ground
- Sensor shorted to ground.