This 8-page CAT low oil pressure warning diagnostic document provides the official troubleshooting procedure for fault code 0100-01 (Event Code 46) on Caterpillar diesel engines. It covers the systematic diagnosis of low engine oil pressure conditions, including sensor checks, wiring inspection, and mechanical verification steps relevant to CAT heavy-duty powertrains.
Official CAT low oil pressure warning document details
| Brand | Caterpillar (CAT) |
| Model coverage | C11, C13, C15 engines (All Others) |
| System / Group | Diagnostic Trouble Codes (DTCs) |
| Publication no. | 0100-01 Low Oil Pressure Warning 46 |
| Year / Revision | Unknown |
| Pages | 8 |
| File size | 0.5 MB |
| Format | PDF (compressed) |
| Language | English |
Document table of contents
- 0100-01 Low Oil Pressure Warning 46 — Section 1: Conditions for setting the fault code
- 0100-01 Low Oil Pressure Warning 46 — Section 2: Diagnostic procedures and step-by-step troubleshooting
- 0100-01 Low Oil Pressure Warning 46 — Section 3: Oil pressure sensor circuit testing
- 0100-01 Low Oil Pressure Warning 46 — Section 4: Mechanical oil system inspection
- 0100-01 Low Oil Pressure Warning 46 — Section 5: Verification and fault code clearing
Applicable truck models
This document applies to Caterpillar C11, C13, and C15 diesel engines classified under the “All Others” group. These engines are widely installed in Class 8 on-highway trucks, vocational vehicles, and heavy equipment platforms. The DTC 0100-01 with Event Code 46 relates specifically to conditions where engine oil pressure drops below the manufacturer-defined threshold, triggering a cab warning. Technicians working on any chassis equipped with these CAT engine models should reference this procedure when the fault is active or logged. For additional technical resources and engine specifications, visit the Caterpillar official support page.
Who needs this CAT low oil pressure warning manual
Diesel mechanics, fleet maintenance technicians, and independent workshop owners servicing Caterpillar-powered trucks will find this document essential when diagnosing oil pressure faults. It is particularly valuable for shops that handle C11, C13, and C15 engine repairs and need the factory-approved diagnostic sequence for DTC 0100-01.
The full PDF is available in the DiagTechPro manuals library. A free account is required to download.
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