Exhaust Gas Pressure Sensor Number 1 Circuit – Voltage Above Normal, or Shorted to High Source
|Fault Code: 0001
Exhaust Gas Pressure Sensor Number 1 Circuit – Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the Exhaust Gas Pressure Sensor circuit.
None on performance.
Exhaust Gas Pressure Sensor Number 1 Circuit
The exhaust gas pressure sensor provides the exhaust gas pressure to the exhaust gas treatment monitor unit through the exhaust gas treatment monitor harness.
The exhaust gas pressure sensor will be located near the inlet to the exhaust catalyst. The location will vary depending on application.
Possible causes of this fault code include:
- Open return circuit in the harness, connectors, or sensor
- Signal circuit shorted to sensor supply or battery voltage.
This fault code will only be present in the exhaust gas treatment monitor unit and will not be present in the engine electronic control module (ECM). The exhaust gas treatment fault code and maintenance lamps will both flash one time in sequence to alert the operator that this condition exists. The engine diagnostic lamps will not illuminate.