This document is a Cummins 1911 fault code troubleshooting file for high fuel rail pressure diagnostics on CM2150 engines. It explains Fault Code 1911, SPN 157 FMI 0, the amber CHECK ENGINE lamp response, and guided repair checks using INSITE™ electronic service tool.
Official Cummins 1911 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150 (2007-09), with path references for ISB, QSB3.3, ISC, ISL, ISBe, ISDe, and ISLe CM2150 engines |
| System/Group | DTCs; injector metering rail number 1 pressure; high-pressure fuel system |
| Publication no. | 08-fc1911 |
| Year/Revision | Last Modified: 08-Jan-2008; later troubleshooting text Last Modified: 20-Jul-2010 |
| Pages | 36 |
| File size | 0.6 MB |
| Format | |
| Language | English |
Document table of contents
- Fault Code Path Selection
- Overview
- Circuit Description
- FAULT CODE 1911
- ISB Fuel Flow
- B3.3 Fuel Flow
- 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 Fault Code t05-1911
- Guided Step 3C – Check the fuel filter pressure drop
- Guided Step 5C – Monitor the fuel rail pressure at idle
- Guided Step 5D – Inspect the fuel pump actuator for damage
- Guided Step 6 – Check the ECM to ground strap
- Guided Step 7A – Disable the fault code
- Guided Step 7B – Clear the inactive fault codes
Applicable truck models
This Cummins 1911 fault code procedure applies to engines identified in the extract, including ISB Series 6.7L CM2150 engines and QSB3.3 engines, with related service manual references for B3.3 and QSB3.3 Series Engines, ISBe and ISDe Series 4.5L and 6.7L Engines, ISC and ISL CM2150, and ISLe CM2150. The text does not list truck makes or vehicle models, so coverage should be verified by engine family, ECM calibration, and the applicable Cummins service manual bulletin. See the manufacturer at Cummins official website.
Who needs this Cummins 1911 fault code manual
Workshop technicians, fleet mechanics, and diagnostic tool users need this manual when rail fuel pressure is above commanded pressure and Fault Code 1911 becomes active without a fuel pump actuator circuit fault. It is useful for checking fuel inlet restriction, suction-side fuel filters, OEM fuel lines, stand-pipes, fuel pressure sensor accuracy, fuel pump actuator condition, ECM grounds, and inactive fault clearing.
The procedure also warns that the fuel pump, high-pressure fuel lines, and fuel rail contain very high-pressure fuel. Do not loosen fittings while the engine is running, and allow pressure to decrease after shutdown before working on the high-pressure fuel system. Full PDF available in the DiagTechPro manuals library, free account required to download.
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