This Cummins 452 fault code document is a troubleshooting manual for the Injector Metering Rail 1 Pressure Sensor Circuit fault. It explains the low-voltage or short-to-low-source condition, the ECM response, and the guided checks used with INSITE™ electronic service tool.
Official Cummins 452 fault code document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250; associated procedure tables also list ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, QSL9 CM2250, QSB6.7 CM2250, ISF2.8 CM2220, ISF3.8 CM2220, ISB4.5, ISD4.5, ISD6.7 CM2150, ISL8.9 CM2150, and ISZ13 CM2150 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Injector Metering Rail 1 Pressure Sensor Circuit |
| Publication no. | 4022254 for ISB6.7 CM2250 in the associated procedures table |
| Year/Revision | Last Modified: 11-Jun-2010 and 20-Jul-2010 |
| Pages | 18 |
| File size | 0.3 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
- Guided Step 1 – Check the fault codes.
- Guided Step 2 – Check the rail fuel pressure sensor and engine harness.
- Guided Step 3. Check the ECM and engine harness.
- Guided Step 4. Check ECM calibration and clear fault codes.
Applicable truck models
This file covers Cummins electronic engine diagnostics for Fault Code 452, PID P157, SPN 157, FMI 3, with direct coverage shown for ISB6.7 CM2250 and circuit references for ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, and ISX15 CM2250. The associated procedure table also references ECM, ECM Calibration Code, Engine Wiring Harness, and Rail Fuel Pressure Sensor procedures across several Cummins engine families. Official manufacturer information is available at Cummins.
Who needs this Cummins 452 fault code manual
Workshop owners, diesel technicians, and fleet mechanics need this 452 fault code manual when diagnosing low fuel rail pressure sensor signal voltage, checking 5 volt supply and return circuits, or confirming whether the ECM, sensor, or engine harness is at fault.
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