This Cummins code 553 troubleshooting document is a diagnostic PDF for Fault Code 553 on Cummins CM2250 engines. It explains an amber-lamp fault where Injector Metering Rail 1 Pressure is valid but above the normal operating range, with possible engine noise at idle or light load and possible reduced performance.
Official Cummins code 553 troubleshooting document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, with associated procedure listings for ISC8.3 and ISL9 CM2250, ISX15 CM2250, ISX11.9 CM2250, QSL9 CM2250, QSB6.7 CM2250, and other listed Cummins platforms |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs |
| Publication no. | Not specified in the extract |
| Year/Revision | Last Modified: 11-Jun-2010; troubleshooting section Last Modified: 20-Jul-2010 |
| Pages | 13 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- FAULT CODE 553 – Injector Metering Rail 1 Pressure – Data Valid But Above Normal Operating Range – Moderately Severe Level
- 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 the fault codes
- Guided Step 2 – Check the fuel rail pressure sensor
- Guided Step 3 – Check for fuel return drain line restriction
- Guided Step 4 – Check the fuel pump actuator
- Guided Step 5 – Check ECM calibration and clear fault codes
Applicable truck models
This PDF is centered on Cummins ISB6.7 CM2250 Fault Code 553 and the Injector Metering Rail 1 Pressure Circuit. The extract also lists related Cummins CM2250 and CM2150 engine families in the associated procedures table, including ISC8.3 and ISL9 CM2250, ISX15 CM2250, ISX11.9 CM2250, QSL9 CM2250, QSB6.7 CM2250, ISB4.5, ISB6.7, ISD4.5 and ISD6.7 CM2150 SN, ISL8.9 CM2150 SN, and ISZ13 CM2150. For manufacturer information, visit Cummins official website.
Who needs this Cummins code 553 troubleshooting manual
Workshop owners, diesel technicians, and fleet mechanics need this manual when INSITE™ electronic service tool reports SPN 157 FMI 16 or Fault Code 553 with rail pressure higher than commanded pressure. It is useful for checking related actuator fault codes, verifying the rail fuel pressure sensor, inspecting fuel drain line restriction, testing the fuel pump actuator and harness connector pins, reviewing ECM calibration, and confirming the fault becomes inactive after repair.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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