This 2-page troubleshooting guide covers the CAT 3406E intake temperature diagnostic code 0105-00, which flags a high intake manifold air temperature warning (64) on Caterpillar 3406E, C-10, and C-12 on-highway truck engines. The document details the exact conditions that generate this code, the system response, and a step-by-step test procedure to diagnose and resolve the issue.
Official CAT 3406E intake temperature document details
| Brand | Caterpillar (CAT) |
| Model coverage | 3406E, C-10, C-12 Truck Engines (8YS, 9NS, 5DS, 1LW prefixes) |
| System/Group | Diagnostic Trouble Codes — SMCS 1921-038 |
| Publication no. | RENR1328-08 |
| Year/Revision | Published 01/10/2008, Updated 16/10/2008 |
| Pages | 2 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- 0105-00 High Intake Manifold Air Temperature Warning (64) — Conditions Which Generate This Code
- System Response — warning lamp and check engine lamp behavior, “Engine Monitoring Lamps” parameter programming
- Test Step 1: Check the Aftercooler — inspection for debris and air flow restriction
- Expected Results and Repair Actions — clearing restrictions, verifying repair, heavy-load and ambient-temperature considerations
Applicable truck models
This troubleshooting procedure applies to Caterpillar on-highway truck engines in the 3406E, C-10, and C-12 families, specifically serial prefixes 8YS, 9NS, 5DS, and 1LW. The configuration referenced in the document is the C-12 Truck Engine 9NS00001-UP. These engines are widely used in Class 8 heavy-duty trucks from multiple OEMs. For official parts lookup, technical bulletins, and service information, visit Caterpillar Support and Service Resources.
Who needs this CAT 3406E intake temperature manual
Fleet mechanics, independent diesel technicians, and workshop owners working on CAT-powered trucks will need this document when DTC 0105-00 appears on the electronic service tool. It is essential for anyone diagnosing high intake manifold air temperatures on 3406E, C-10, or C-12 engines.
The ECM triggers this code when the intake manifold air temperature exceeds 90 °C (194.0 °F) for more than four seconds, the engine has been running for at least 30 seconds, and the engine coolant temperature is above 99 °C (210.0 °F). The system response includes displaying “DIAG” next to the status for “Intake Manifold Air Temperature” on the electronic service tool. The warning lamp or check engine lamp activates depending on how the “Engine Monitoring Lamps” parameter is programmed. Customer passwords are required to clear this diagnostic code.
The primary diagnostic step directs the technician to inspect the air-to-air aftercooler for debris or restriction. If no restriction is found, the technician should investigate other causes of elevated temperatures such as heavy loads and high ambient air temperatures. If restrictions are present, they must be removed and the repair verified before closing out the code.
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.
CAT Perkins Pack – Premium Power & Performance by Caterpillar
CAT SIS
