Exhaust Gas Temperature Sensor Number 1 Circuit – Voltage Below Normal, or Shorted to Low Source
|Fault Code: 0005
Exhaust Gas Temperature Sensor Number 1 Circuit – Voltage Below Normal, or Shorted to Low Source. Low signal voltage or open circuit detected at the Exhaust Gas Temperature Sensor circuit.
None on performance.
Exhaust Gas Temperature Sensor Number 1 Circuit
The exhaust gas temperature sensor provides the exhaust gas temperature to the exhaust gas treatment monitor unit through the exhaust gas treatment monitor harness.
The exhaust gas temperature 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:
- Signal shorted to ground
- Signal shorted to return or ground in the sensor
- Open circuit on the signal wire
- Open return circuit in the harness, connector, or sensor.
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 five times in sequence to alert the operator that this condition exists. The engine diagnostic lamps will not illuminate.