This code 2373 DTCs document is a troubleshooting manual for the exhaust gas pressure sensor circuit on CM2250 engines. It explains circuit operation, fault conditions, INSITE™ checks, connector inspections, voltage tests, ECM calibration checks, and repair validation for the 16-page PDF.
Official code 2373 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250; also lists ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, QSL9 CM2250, QSB6.7 CM2250, GX CM2250, and ISL8.9 CM2150 SN in associated procedures |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Exhaust Gas Pressure Sensor Circuit |
| Publication no. | 4022254 for ISB6.7 CM2250 |
| Year/Revision | Last Modified: 28-Dec-2010; overview section Last Modified: 11-Jun-2010 |
| Pages | 16 |
| 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
- Troubleshooting Steps
- Guided Step 1 – Check the fault codes
- Guided Step 2 – Check the exhaust gas pressure sensor and circuit
- Guided Step 3A – Inspect the ECM and engine harness connector pins
- Guided Step 3B – Inspect the ECM and engine harness connector pins
- Guided Step 4B – Disable the fault code
Applicable truck models
This file applies to Cummins CM2250 engine diagnostic work where Fault Code: 2373, PID: P131, SPN: 1209, FMI: 3/3 is present for the exhaust gas pressure sensor circuit. The extract identifies ISB6.7 CM2250 as the file group and shows associated procedures for ISX11.9 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, QSL9 CM2250, QSB6.7 CM2250, GX CM2250, and ISL8.9 CM2150 SN. For manufacturer information, visit Cummins official website.
Who needs this code 2373 DTCs manual
Workshop technicians, fleet mechanics, and diagnostic tool users need this manual when the ECM detects exhaust gas pressure signal voltage greater than 4.75-VDC for more than 8 seconds. It is useful when checking for Fault Code 227, verifying Fault Code 2374 response, inspecting dirty or damaged pins, measuring 4.75 to 5.25-VDC supply and return voltage, or deciding whether ECM calibration or authorized ECM replacement is required.
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