This document is a fault code 692 DTCs troubleshooting manual for the turbocharger compressor intake temperature sensor circuit. It explains the circuit description, fault conditions, possible causes, guided diagnostic steps, ECM checks, harness tests, calibration review, and fault clearing for the listed Cummins CM2250 engine families.
Official fault code 692 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, QSL9 CM2250, QSB6.7 CM2250, GX CM2250, ISF2.8 CM2220, ISF3.8 CM2220, ISL8.9 CM2150, ISZ13 CM2150 |
| System/Group | ISB6.7 CM2250 (2010-12) / DTCs |
| Publication no. | Not stated for the PDF; associated bulletin numbers include 4022254, 4022257, 4022250, 2883445, 4022256, and 4022255 |
| Year/Revision | Last Modified: 20-Jan-2011; overview Last Modified: 11-Jun-2010 |
| Pages | 16 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- FAULT CODE 692 – Turbocharger 1 Compressor Intake Temperature Circuit – Voltage Below Normal, or Shorted to Low Source
- 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 Fault Code 692
- Guided Step 1 – Check the fault codes
- Guided Step 2 – Check the turbocharger compressor intake air temperature sensor and circuit
- Guided Step 3 – Check the ECM and engine harness
- Guided Step 4 – Clear the fault code
Applicable truck models
This fault code 692 DTCs PDF applies to engines and diagnostic coverage named in the extract, including ISB6.7 CM2250, ISC8.3 and ISL9 CM2250, ISX11.9 CM2250, ISX15 CM2250, QSL9 CM2250, QSB6.7 CM2250, GX CM2250, and related CM2220 or CM2150 models listed in the associated procedures table. The fault concerns Turbocharger 1 Compressor Intake Temperature Circuit voltage below normal or shorted to low source, with PID P351, SPN 1172, FMI 4, amber lamp, and engine power derate noted. Some engines use a combination ambient air pressure/temperature sensor in OEM intake air plumbing instead of a separate turbocharger compressor intake temperature sensor, so the document directs users to the engine wiring diagram for sensor identification. See the manufacturer at Cummins official website.
Who needs this fault code 692 DTCs manual
Workshop owners, diesel mechanics, and fleet technicians need this manual when diagnosing low signal voltage on the compressor intake air temperature circuit. It supports checks for dirty or damaged connector pins, short-to-ground faults, pin-to-pin shorts, sensor condition, ECM response with INSITE™ electronic service tool, and ECM calibration code review.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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