Oil Pressure Sensor Circuit – Voltage Above Normal, or Shorted to High Source
|Fault Code: 135
Oil Pressure Sensor Circuit – Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the engine oil pressure circuit.
None on performance. No engine protection for oil pressure.
Oil Pressure Sensor Circuit
The engine oil pressure sensor is used by the electronic control module (ECM) to monitor the lubricating oil pressure. The ECM monitors the voltage on the signal pin and converts this to a pressure value.
The engine oil pressure sensor is located on the left side of the engine block. Refer to Procedure 100-002 for a detailed component location view.
The oil pressure sensor shares supply and return wires in the engine harness with other sensors. Opens and shorts in the engine harness can cause multiple fault codes to be active. Before troubleshooting Fault Code 135, check for multiple faults.
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.