This code 418 DTCs document is a 3-page diagnostic PDF for the water-in-fuel indicator fault on CM2150 engines. It explains the circuit description, fault conditions, ECM action, clearing condition, shop notes, and the guided troubleshooting step for Code 418.
Official code 418 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150 (2007-09); extract also references ISB, ISC, and ISL with CM2150 |
| System/Group | DTCs; Water-In-Fuel Indicator |
| Publication no. | Code 418 |
| Year/Revision | Last Modified: 20-Jul-2010 |
| Pages | 3 |
| 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 418.
Applicable truck models
This file applies to Cummins ISB6.7 CM2150 (2007-09) fault diagnostics in the DTC group. The extract identifies the related system as “ISB, ISC, and ISL with CM2150 – Water-In-Fuel Indicator,” with the water-in-fuel sensor integrated into the bottom of the OEM supplied suction fuel filter on the intake side of the engine. For manufacturer information, visit Cummins official website.
Who needs this code 418 DTCs manual
Workshop owners, diesel mechanics, and fleet technicians need this code 418 DTCs manual when the ECM reports PID P097, SPN 97, FMI 0/15, and the amber MAINTENANCE lamp is flashing. The document supports a direct check with INSITE™ electronic service tool and gives the stated repair action: drain the water from the fuel filter.
The fault description states that water has been detected in the fuel filter and that possible effects include white smoke, loss of power, or hard starting. The diagnostic runs continuously with the keyswitch in the ON position, and the ECM turns off the flashing amber MAINTENANCE light after water has been drained from the fuel filter. The shop note also says to verify that the ECM calibration is correct, check calibration revision history on QuickServe™ Online for applicable fixes, and calibrate the ECM if necessary using Procedure 019-032 in Section 19.
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