This Cummins 3254 fault code document is a troubleshooting PDF for aftertreatment diesel particulate filter intake temperature faults. It explains Fault Code 3254, SPN 3242 FMI 15, where the sensor reading is data valid but above the normal operating range. The file is intended for diagnostic work using INSITE™ electronic service tool and Cummins service procedures.
Official Cummins 3254 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, QSB6.7 CM2250 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; aftertreatment diesel particulate filter intake temperature sensor circuit |
| Publication no. | Not specified in extract; associated bulletin numbers include 4022254, 4022257, 4022250, 2883445, 4022256, and 4022255 |
| Year/Revision | Last Modified: 07-Dec-2010; overview section shows Last Modified: 11-Jun-2010 |
| Pages | 14 |
| 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
- STEP 1. Check the aftertreatment system.
- STEP 2. Check the fuel system.
- STEP 3. Check the turbocharger outlet.
- Guided Step 4 – Check the aftertreatment fuel injector.
- Guided Step 5B – Inspect the aftertreatment diesel oxidation catalyst for cracks in the cell wall.
- Guided Step 6B – Disable the fault code.
Applicable truck models
This troubleshooting information applies to Cummins CM2250 engine platforms listed in the document, including ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, and QSB6.7 CM2250. The fault concerns the aftertreatment diesel particulate filter intake temperature sensor located at the outlet of the diesel oxidation catalyst and before the diesel particulate filter; the document refers users to the OEM service manual for exact component location. See the manufacturer’s official site at Cummins official website.
Who needs this Cummins 3254 fault code manual
Workshop technicians, fleet mechanics, and diesel repair shops need this 3254 fault code manual when active or inactive Fault Code 3254 appears and regeneration is disabled. The checks cover aftertreatment exhaust gas temperature sensors, injector misfire, turbocharger exhaust outlet oil or fuel contamination, aftertreatment fuel injector operation, diesel oxidation catalyst face plugging, ECM calibration, and final fault clearing.
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