CM870 and ISX Engines – FAULT CODE 141

Engine Oil Pressure Sensor Circuit


Overview

CODE REASON EFFECT
Fault Code: 141
PID: P100
SPN: 100
FMI: 4/4
LAMP: Amber
SRT: 

Engine Oil Pressure Sensor Circuit – Shorted Low. Low signal voltage detected at engine oil pressure circuit.

No engine protection for engine oil pressure.

Engine 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. The oil pressure value is used by the ECM for the engine protection system.

Component Location

The engine oil pressure sensor is located on the intake side of the engine block, below and to the rear of the integrated fuel system module (IFSM).

Shop Talk

The engine 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:

  • Open signal wire in the harness, connectors, or sensor
  • Signal wire shorted to ground.

Refer to Troubleshooting Fault Code t05-141

Last Modified:  01-Sep-2010