Posted on by

Mechanical Gas Fuel System G5.9, G8.3 – FAULT CODE 187

Sensor Supply Voltage 2 Circuit – Voltage Below Normal or Shorted to Low Source


Overview

Sensor Supply Voltage 2 Circuit – Voltage Below Normal or Shorted to Low Source

CODE REASON EFFECT
Fault Code: 187
PID: S232
SPN: 1080
FMI: 4
LAMP: Warning
SRT: 

Sensor Supply Voltage 2 Circuit – Voltage Below Normal or Shorted to Low Source.

Engine unable to reach rated speed.
Sensor Supply Voltage 2 Circuit
SMALL | MEDIUM | LARGE

Circuit Description

Sensor supply circuit 2 from the ECM supplies the speed adjustment potentiometer in the OEM panel with a positive (+) 5-VDC supply.

Component Location

100-002 for the component location.

Refer to Troubleshooting Fault Code t05-187

Last Modified:  15-Jul-2010
Avatar photo

Published by Jack

Hello, I'm Jack, a diesel engine fan and a blogger. I write about how to fix and improve diesel engines, from cars to trucks to generators. I also review the newest models and innovations in the diesel market. If you are interested in learning more about diesel engines, check out my blog and leave your feedback.