ISB/ISBe Series Engines – FAULT CODE 239

Sensor Supply C – High Voltage


Overview

CODE REASON EFFECT
Fault Code: 239
PID: S232
SPN: 620
FMI: 3
LAMP: Yellow
SRT: 

High voltage detected on the electronic control module (ECM) voltage supply line to the oil pressure/temperature sensor.

Default value for oil pressure/temperature connected to this +5-VDC supply. No engine protection for oil pressure.

Oil Pressure/Temperature Sensor Circuit
SMALL | MEDIUM | LARGE

Circuit Description

The oil pressure/temperature 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 oil pressure/temperature sensor is located on the engine block, below the exhaust manifold, and near the oil filter housing.

Shop Talk

  • If Fault Code 143 or 415 is not present, the problem is not related to the engine lubrication system.
  • INSITE™ can be used to monitor the oil pressure signal voltage going into the ECM.
  • Confirm that the correct oil pressure/temperature sensor part number is being used.
  • If Fault Codes 239 and 135 are active, then begin troubleshooting Fault Code 239 first.

Refer to Troubleshooting Fault Code t05-239

Last Modified:  26-Oct-2010