This document is a code 2973 DTCs troubleshooting manual for Intake Manifold 1 Pressure – Data Erratic, Intermittent, or Incorrect. It explains the circuit, fault effects, diagnostic conditions, possible causes, guided repair steps, and fault clearing process for CM2250 engine applications.
Official code 2973 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, QSB6.7 CM2250 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs; Intake Manifold 1 Pressure/Temperature Sensor Circuit |
| Publication no. | Not listed as one document number; associated bulletin numbers include 4022254, 4022257, 4022250, 2883445, 4022256, and 4022255 |
| Year/Revision | Last Modified: 04-Jan-2011; overview section Last Modified: 11-Jun-2010 |
| Pages | 23 |
| File size | 0.2 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
- STEP 1. Check the fault codes.
- STEP 2. Check the barometric pressure sensor.
- Guided Step 3A – Inspect the engine intake manifold pressure/temperature sensor and connector pins.
- Step 4 – Check the ECM and engine harness.
- Guided Step 5C – Check for a restricted charge-air cooler.
- Guided Step 6 – Check the turbocharger speed sensor.
- Guided Step 8B – Disable the fault code.
Applicable truck models
This file applies to Cummins CM2250 engine platforms listed in the extract, including ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX15 CM2250, GX CM2250, ISX11.9 CM2250, QSL9 CM2250, and QSB6.7 CM2250. The procedure concerns the intake manifold 1 pressure/temperature sensor, the barometric air pressure sensor, air intake system leaks, charge-air cooler restriction, exhaust restriction, turbocharger speed sensor checks, turbocharger compressor intake pressure/temperature sensor checks, ECM connector inspection, and INSITE™ electronic service tool fault validation. For manufacturer information, visit the Cummins official website.
Who needs this code 2973 DTCs manual
Workshop owners, diesel technicians, and fleet mechanics need this code 2973 DTCs manual when an amber CHECK ENGINE lamp or MIL appears with SPN: 102 and FMI: 2. The file supports diagnosis where the ECM estimates intake manifold pressure, disables diesel exhaust fluid injection, disables active and stationary regeneration, closes the EGR valve, and may reduce torque after extended operation with the fault active.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
Related manuals library
Sản phẩm liên quan cho hãng này
Cùng brand theo taxonomy hiện có trong catalog WooCommerce.
Cummins Calterm Version 5.16 – Advanced ECM Control and Precision Tuning for Cummins Engines
Cummins INSITE 9.3 – The Essential Diagnostic Tool for Cummins Engines
Cummins InCal CE – The Calibration and Configuration Tool for Cummins Engines
