This Cummins 3235 fault code document is a troubleshooting manual for an SCR outlet temperature fault on CM2250 engines. It explains Fault Code 3235, SPN 4363 FMI 16, where the SCR outlet temperature sensor reading exceeds the maximum temperature limit. The procedure also states the effect: diesel exhaust fluid injection into the SCR aftertreatment system is disabled.
Official Cummins 3235 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, with associated coverage shown 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 SCR Outlet Temperature Sensor Circuit |
| Publication no. | 4022254 shown for ISB6.7 CM2250 associated procedures; other bulletin numbers listed include 4022257, 4022250, 2883445, 4022256, and 4022255 |
| Year/Revision | Last Modified: 11-Jun-2010; troubleshooting section Last Modified: 07-Dec-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
- FAULT CODE 3235 – Aftertreatment SCR Outlet Temperature – Data Valid But Above Normal Operating Range – Moderately Severe Level
- 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 aftertreatment system
- Guided Step 2 – Check the diesel exhaust fluid (DEF) for contamination
- Guided Step 4 – Check the turbocharger outlet
- Guided Step 6 – Inspect the aftertreatment diesel oxidation catalyst
- Guided Step 7B – Disable the fault code
Applicable truck models
The extract identifies this fault information for ISX11.9 CM2250, ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, and ISX15 CM2250 aftertreatment SCR outlet temperature sensor circuits. The associated procedures table also lists GX CM2250, QSL9 CM2250, and QSB6.7 CM2250 for related injector, SCR catalyst, diesel oxidation catalyst, exhaust system diagnostics, aftertreatment testing, ECM calibration code, and SCR catalyst temperature sensor interface module procedures. See the manufacturer at Cummins official website.
Who needs this Cummins 3235 fault code manual
Workshop technicians need this 3235 fault code manual when diagnosing red STOP ENGINE lamp events tied to SCR outlet temperature above 650°C [1202°F] for more than 60 seconds. It is useful for checking inactive and active faults, DEF contamination, injector misfire, turbocharger outlet oil or fuel contamination, diesel oxidation catalyst soot accumulation, ECM calibration status, and INSITE™ fault clearing.
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