This Cummins code 554 document is a troubleshooting procedure for Fault Code 554 on ISB6.7 CM2150 engines. It covers injector metering rail 1 pressure data that is erratic, intermittent, or incorrect, with checks for the fuel rail pressure sensor circuit, ECM response, harness condition, and fault clearing. The file is useful when the amber CHECK ENGINE lamp is active and the ECM estimates fuel pressure with reduced power.
Official Cummins code 554 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2150 (2007-09) |
| System/Group | DTCs; Injector Metering Rail 1 Pressure; fuel rail pressure sensor circuit |
| Publication no. | Not shown in the extract |
| Year/Revision | Last Modified: 20-Jul-2010 |
| Pages | 11 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- FAULT CODE 554
- 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 rail fuel pressure sensor and circuit.
- Guided Step 3 – Check the ECM and engine harness.
- Guided Step 4 – Clear the fault code.
Applicable truck models
This PDF applies to Cummins ISB6.7 CM2150 engines in the 2007-09 coverage group. The extract also references ISB with CM2150 fuel rail pressure sensor location and related shared +5 volt sensor supply components, including the intake manifold pressure sensor and backup engine position sensor. For official brand information, visit Cummins.
Who needs this Cummins code 554 manual
Workshop owners, diesel mechanics, and diagnostic technicians need this manual when INSITE™ shows Fault Code 554, SPN 157, FMI 2, or when rail fuel pressure does not change with engine operating conditions. It supports connector inspection, circuit response testing for Fault Codes 451 and 452, jumper-wire checks, ECM connector checks, engine harness diagnosis, and inactive fault code clearing.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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