This code 111 DTCs document is a troubleshooting PDF for ECM critical internal failure on ISB6.7 CM2350 engines. It identifies PID S254, SPN 629, FMI 12/12, the red STOP ENGINE lamp response, clearing conditions, ECM replacement guidance, and calibration update checks. The file is intended for diagnostic work where the engine may not start or may be difficult to start.
Official code 111 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2350, 2013-17 |
| System/Group | DTCs; Engine Control Module critical internal failure |
| Publication no. | Not shown in the extract |
| Year/Revision | Unknown; extract shows Copywrite 2017 |
| Pages | 4 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- FAULT CODE: 111
- PID: S254
- SPN: 629
- FMI: 12/12
- LAMP: RED
- ENGINE CONTROL MODULE CRITICAL INTERNAL FAILURE – BAD INTELLIGENT DEVICE OR COMPONENT
- CIRCUIT DESCRIPTION
- COMPONENT LOCATION
- REASON
- EFFECT
- 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
- TROUBLESHOOTING STEPS
- Step 1A) Check the ECM.
- Step 1B) Check the inactive counts of Fault Code 111.
- Step 2A) Check if an ECM calibration update is available.
- Step 2B) Disable the fault code.
Applicable truck models
This document applies to Cummins ISB6.7 CM2350 engines in the 2013-17 coverage group shown in the file information. The procedure is limited to the Engine Control Module, including internal memory diagnostics, internal ECM voltage supply circuits, diagnostic tool checks, inactive count review, calibration revision comparison, and fault clearing after a key cycle and one-minute idle validation. For official manufacturer information, visit Cummins official website.
Who needs this code 111 DTCs manual
Workshop owners, diesel mechanics, and diagnostic technicians need this manual when a Cummins ISB6.7 CM2350 sets Fault Code 111 and reports an internal ECM read or write error. It helps confirm whether no repair is needed after the fault becomes inactive, whether an ECM calibration update should be applied, or whether the ECM must be replaced because repairs are not possible for the ECM.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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