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Oil Pressure Sensor Circuit – Voltage Below Normal, or Shorted to Low Source
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 141 PID: P100 SPN: 100 FMI: 4/4 LAMP: Amber SRT: |
Oil Pressure Sensor Circuit – Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the engine oil pressure circuit. |
None on performance. No engine protection for oil pressure. |
 Oil Pressure Sensor Circuit
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Circuit Description
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.
Component Location
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.
Shop Talk
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 141, check for multiple faults.
Possible causes of this fault code include:
- Signal circuit open or shorted to ground in the engine harness or sensor
- Supply line open or shorted to ground.
Refer to Troubleshooting Fault Code t05-141
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