This document is a Cummins fault code 135 troubleshooting manual for the engine oil rifle pressure 1 sensor circuit. It explains the high-voltage or short-to-high-source fault, the ECM response, sensor checks, harness inspections, and final code clearing using INSITE™ electronic service tool.
Official Cummins fault code 135 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150 (2007-09); extract also references ISC and ISL with CM2150 |
| System/Group | DTCs; Engine Oil Rifle Pressure 1 Sensor Circuit |
| Publication no. | Not shown |
| Year/Revision | Last Modified: 20-Jul-2010 |
| Pages | 14 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- FAULT CODE 135
- Conditions for Setting the Fault Codes
- Action Taken When the Fault Code is Active
- Conditions for Clearing the Fault Code
- Shop Talk
- Associated Procedures
- Troubleshooting Steps
- Guided Step 1 – Check the fault codes.
- Guided Step 2 – Check the oil pressure sensor and circuit.
- Guided Step 3 – Check the ECM and engine harness.
- Step 4 – Clear the fault code.
Applicable truck models
This file applies to Cummins ISB6.7 CM2150 engines in the 2007-09 coverage group, with the extract also naming ISC and ISL with CM2150 for the Engine Oil Rifle Pressure 1 fault description. It is written for diagnosing Fault Code: 135, PID: P100, SPN: 100, FMI: 3/3, where the ECM detects engine oil pressure signal voltage greater than 4.75-VDC for more than 16 seconds. For manufacturer information, visit Cummins official website.
Who needs this fault code 135 manual
Workshop technicians, fleet mechanics, and diagnostic tool users need this fault code 135 manual when an amber CHECK ENGINE light appears and oil pressure sensor data defaults. The procedure focuses on connector condition, 5 volt supply and return testing, ECM connector checks, engine harness faults, and verification after repair.
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