This fault code 295 DTCs document is a troubleshooting manual for barometric pressure data that is erratic, intermittent, or incorrect. It explains how the ECM evaluates pressure sensor readings, what actions occur when the fault is active, and how to validate repairs with INSITE™ electronic service tool.
Official fault code 295 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, ISC8.3 CM2250, ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, GX CM2250, QSL9 CM2250, QSB6.7 CM2250 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; barometric pressure and turbocharger compressor intake pressure sensor circuits |
| Publication no. | Not stated; related bulletin numbers include 4022254, 4022257, 2883445, 4022256, 4022255, and 4022250 |
| Year/Revision | Last Modified: 26-Oct-2009, 11-Jun-2010, and 04-Jan-2011 |
| Pages | 27 |
| File size | 0.5 MB |
| Format | |
| Language | English |
Document table of contents
- FAULT CODE 145-fc295 Fault Code Path Selection
- FAULT CODE 295 (ISB, ISC, ISL) – Barometric Pressure – Data Erratic, Intermittent, or Incorrect
- 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 2C – Check the circuit response.
- Guided Step 3 – Check the ECM and engine harness.
- Guided Step 3A – Inspect the ECM and engine harness connector pins.
- Guided Step 5B – Disable the fault code.
Applicable truck models
The file covers Cummins engines and CM2250 control systems listed in the extract, including ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, GX CM2250, QSL9 CM2250, and QSB6.7 CM2250. For ISB, ISC, and ISL applications, the procedure centers on the turbocharger compressor intake pressure/temperature sensor in the OEM intake air plumbing; for ISX coverage, it addresses the barometric pressure sensor and related 5 volt supply, signal, and return circuits. Manufacturer information is available at Cummins official website.
Who needs this fault code 295 DTCs manual
Workshop owners, diesel technicians, and fleet maintenance staff need this code 295 DTCs manual when diagnosing amber CHECK ENGINE lamp complaints, derate conditions, disabled DEF injection, disabled regeneration, or EGR closure linked to barometric pressure plausibility faults. The guided checks support sensor replacement decisions, engine harness inspection, ECM connector pin checks, calibration verification, and fault clearing after the diagnostic runs and passes.
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