This document is a fault code 3164 DTCs troubleshooting manual for the aftertreatment SCR intake temperature sensor. It explains the circuit description, fault conditions, likely causes, guided diagnostic steps, and fault clearing process for Cummins CM2250 engines. The file is a 10-page English PDF for workshop diagnostic reference.
Official fault code 3164 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, with associated procedure coverage also listing ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, QSL9 CM2250, QSB6.7 CM2250, GX CM2250, ISF2.8 CM2220 AN, ISF3.8 CM2220 AN, ISB4.5, ISB6.7, ISD4.5, ISD6.7 CM2150 SN, ISL8.9 CM2150 SN, and ISM11 CM876 SN |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs |
| Year/Revision | Last Modified: 19-Jan-2011; overview section Last Modified: 11-Jun-2010 |
| Pages | 10 |
| 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
- Troubleshooting Steps
- Guided Step 1 – Check for sensor circuit fault codes.
- Guided Step 2 – Check the air handling system for correct operation.
- Guided Step 3 – Inspect the SCR inlet temperature sensor.
- Guided Step 4 – Check ECM calibration and clear fault codes.
Applicable truck models
This procedure applies to Cummins engines using the CM2250 aftertreatment diagnostic set shown in the document, with the listed ISB6.7 CM2250 coverage and associated procedure references for other Cummins engine models. The fault concerns high SCR catalyst intake temperature detected by the ECM, with the SCR intake temperature sensor located between the diesel particulate filter and the SCR catalyst in the exhaust system. Official manufacturer information is available from Cummins.
Who needs this fault code 3164 DTCs manual
This manual is for diesel technicians, fleet maintenance staff, and workshop owners diagnosing an amber lamp, SPN 4360 FMI 15, or possible engine derate related to high aftertreatment SCR intake temperature. It is useful when checking INSITE fault status, sensor circuit fault codes 3142 or 3143, charge-air cooler leaks, turbocharger blade damage, SCR inlet temperature sensor condition, and ECM calibration revision.
The diagnostic flow directs the technician to check active fault codes with INSITE, inspect the air handling system, examine turbocharger compressor and turbine blades, remove and inspect the SCR inlet temperature sensor, compare ECM calibration code and revision history, then disable and clear the fault code after operating the engine under the clearing conditions. Full PDF available in the DiagTechPro manuals library, free account required to download.
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