This Cummins 1922 fault code document is a troubleshooting PDF for an aftertreatment diesel particulate filter differential pressure fault on CM2250 engines. It explains why the ECM sets Fault Code 1922, what engine protection actions occur, and which INSITE™ tests and inspections are used before the code can be cleared.
Official Cummins 1922 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, with associated references for ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, and QSB6.7 CM2250 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; aftertreatment diesel particulate filter differential pressure sensor circuit |
| Publication no. | 4022254 for ISB6.7 CM2250 associated procedures |
| Year/Revision | Modified 11-Jun-2010; last modified 21-Jan-2011 |
| Pages | 15 |
| 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
- Aftertreatment System Soot Stages
- Associated Procedures
- Troubleshooting Steps
- Guided Step 2 – Check the aftertreatment temperature sensors.
- Guided Step 3 – Inspect the aftertreatment diesel particulate filter differential pressure sensor.
- Guided Step 4A – Check the aftertreatment duty cycle.
- Guided Step 5 – Check for excessive black smoke.
- Guided Step 6B – Disable the fault code.
Applicable truck models
This file applies to Cummins CM2250 engine platforms shown in the extract, led by ISB6.7 CM2250 and including references for ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, and QSB6.7 CM2250. The aftertreatment diesel particulate filter is installed in the exhaust system by the OEM, so vehicle installation details must be checked in the OEM service manual. Manufacturer information is available from Cummins official website.
Who needs this Cummins 1922 fault code manual
Workshop technicians need this 1922 fault code manual when a truck has a red STOP ENGINE lamp, severe derate, and high soot loading in the aftertreatment diesel particulate filter. It is also useful for fleet owners checking whether light duty cycle operation, regeneration inhibit settings, black smoke, sensor accuracy, blocked pressure tubes, or ECM calibration may be involved.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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