This document is a fault code 649 DTCs troubleshooting sheet for the ISB6.7 CM2150 engine family. It explains the Engine Oil Change Interval maintenance reminder, the CHECK ENGINE lamp behavior, and the required oil and filter service before reset. The file also outlines INSITE™ electronic service tool steps for checking, resetting, and clearing the code.
Official fault code 649 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150 (2007-09) |
| System/Group | DTCs; Maintenance Monitor; Engine Oil Change Interval |
| Publication no. | Not shown in extract |
| Year/Revision | Last Modified: 20-Jul-2010 and 27-Jul-2010; file year unknown |
| Pages | 5 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- Conditions for Running the Diagnostics
- 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 1A – Check for Fault Code 649.
- Guided Step 2 – Clear the fault codes.
- Guided Step 2A – Disable the fault code.
- Guided Step 2B – Clear the inactive fault codes.
Applicable truck models
This PDF applies to Cummins ISB6.7 CM2150 (2007-09) engines in applications that use the ECM Maintenance Monitor feature. The extract identifies the oil filter as located on the exhaust side of the engine and states that the oil fill port varies by application, so vehicle-specific oil fill location must be checked in the OEM troubleshooting and repair manual. The diagnostic runs continuously with the keyswitch in the ON position and becomes active only when the Maintenance Monitor is enabled in INSITE™ electronic service tool. For manufacturer support and service information, visit Cummins official website.
Who needs this fault code 649 DTCs manual
Workshop technicians, fleet maintenance staff, and independent mechanics need this code 649 DTCs manual when an ISB6.7 CM2150 reports an Engine Oil Change Interval condition. It is useful for confirming that the active code is a maintenance reminder, changing engine lubricating oil and filter, resetting the Maintenance Monitor, and clearing inactive fault codes with INSITE™ electronic service tool.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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