This 2-page diagnostic document covers the CAT coolant level DTC code 0111-11, titled “Very Low Coolant Level 62,” applicable to Caterpillar C11, C13, and C15 diesel engines. It provides the fault code definition, conditions for triggering the alert, and the recommended troubleshooting steps for resolving low-coolant-level faults in CAT-powered trucks and equipment.
Official CAT coolant level DTC document details
| Brand | Caterpillar (CAT) |
| Model coverage | C11, C13, C15 (All Others) |
| System / Group | Diagnostic Trouble Codes (DTCs) — Cooling System |
| Publication no. | 0111-11 Very Low Coolant Level 62 |
| Year / Revision | Not specified |
| Pages | 2 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- 58 – 0111-11 Very Low Coolant Level 62-1 (Page 1 of 2)
- 58 – 0111-11 Very Low Coolant Level 62-2 (Page 2 of 2)
Applicable truck models
This diagnostic trouble code reference applies to Caterpillar engines in the C11, C13, and C15 families, grouped under the “All Others” designation. These engines are widely installed in Class 8 on-highway trucks, vocational vehicles, and off-highway machines from multiple OEMs. The DTC 0111-11 monitors coolant level sensor input and sets an active fault when the ECM detects a very low coolant condition, which can lead to overheating and engine damage if not addressed promptly. Technicians working on any chassis equipped with these CAT engine platforms should consult this document when the fault appears. For additional technical resources and service bulletins, visit the Caterpillar official support page.
Who needs this coolant level DTC manual
Fleet maintenance managers, heavy-truck mechanics, and independent workshop owners diagnosing cooling-system faults on CAT-powered equipment will benefit from this reference. It is essential for anyone troubleshooting DTC 0111-11 to understand the sensor circuit, fault conditions, and corrective actions outlined in the document.
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