This 2-page PDF is a CAT coolant temperature DTC reference covering diagnostic trouble code 0110-11 (Very High Coolant Temperature) for Caterpillar C11, C13, and C15 diesel engines. It provides the fault description and diagnostic procedures needed to identify and resolve overheating-related engine derate conditions.
Official CAT coolant temperature DTC document details
| Brand | Caterpillar (CAT) |
| Model coverage | C11, C13, C15 (All Others) |
| System / Group | Diagnostic Trouble Codes (DTCs) |
| Publication no. | 0110-11 |
| Year / Revision | Unknown |
| Pages | 2 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- 53 – 0110-11 Very High Coolant Temperature 61 (Page 1 of 2)
- 53 – 0110-11 Very High Coolant Temperature 61-2 (Page 2 of 2)
Applicable truck models
This diagnostic trouble code document applies to Caterpillar C11, C13, and C15 diesel engines classified under the “All Others” group. These engines are widely installed in heavy-duty on-highway trucks, vocational vehicles, and select off-highway equipment. The DTC 0110-11 relates specifically to the engine coolant temperature sensor circuit and very high coolant temperature events that can trigger power derate or engine shutdown protection strategies. Mechanics working on any chassis equipped with these CAT engine platforms — including Peterbilt, Kenworth, Western Star, and Freightliner trucks — will find this document relevant. For additional OEM technical resources, visit Caterpillar’s official support page.
Who needs this coolant temperature DTC manual
Fleet maintenance technicians, independent diesel mechanics, and workshop owners diagnosing overheating complaints or derate conditions on CAT C11, C13, or C15 engines need this reference. It is essential for anyone using Caterpillar ET (Electronic Technician) software to clear or troubleshoot code 0110-11 and restore normal engine operation.
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