This 2-page PDF document covers the CAT high coolant temperature warning identified as diagnostic trouble code 0110-00, code 61. It is intended for technicians diagnosing overheating-related fault codes on Caterpillar heavy-duty diesel engines. The document provides the specific conditions, parameters, and troubleshooting guidance associated with this warning code.
Official CAT high coolant temperature warning document details
| Brand | Caterpillar (CAT) |
| Model coverage | C11, C13, C15 (All Others) |
| System / Group | Diagnostic Trouble Codes (DTCs) |
| Publication no. | 0110-00 High Coolant Temperature Warning 61 |
| Year / Revision | Unknown |
| Pages | 2 |
| File size | 0.1 MB |
| Format | PDF (compressed) |
| Language | English |
Document table of contents
- 0110-00 High Coolant Temperature Warning 61-1 (Page 1)
- 0110-00 High Coolant Temperature Warning 61-2 (Page 2)
Applicable truck models
This document applies to Caterpillar C11, C13, and C15 diesel engines classified under the “All Others” subgroup. These engines are widely installed in heavy-duty on-highway trucks and vocational vehicles from manufacturers such as Kenworth, Peterbilt, and Western Star, as well as in select off-highway and industrial applications. The DTC 0110-00 code 61 relates specifically to the engine coolant temperature sensor circuit and the high coolant temperature warning threshold programmed into the engine control module (ECM). Technicians working on any platform equipped with these CAT engine models should reference this document when the code is active or logged. For additional technical resources and service information, visit Caterpillar’s official support page.
Who needs this high coolant temperature warning manual
Diesel mechanics, fleet maintenance technicians, and workshop owners servicing Caterpillar-powered trucks will find this reference essential when diagnosing DTC 0110-00 code 61. It is also valuable for mobile service technicians who need a concise, field-ready guide to verify coolant temperature sensor readings and confirm whether the warning is triggered by an actual overheat condition or a sensor or wiring fault.
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