This 1-page diagnostic document is a CAT injector current DTC reference covering fault code 0001-05, Cylinder #1 Injector Current Low, for Caterpillar C11, C13, and C15 engines. It provides the diagnostic trouble code definition, possible causes, and the recommended troubleshooting procedure for resolving low injector current on the number one cylinder.
Official CAT injector current DTC document details
| Brand | Caterpillar (CAT) |
| Model coverage | C11, C13, C15 (All Others) |
| System / Group | DTCs — Diagnostic Trouble Codes |
| Publication no. | 0001-05 |
| Year / Revision | Unknown |
| Pages | 1 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- DTC 0001-05: Cylinder #1 Injector Current Low — fault description
- Possible causes of low injector current
- Diagnostic troubleshooting steps
- Injector circuit inspection procedure
Applicable truck models
This diagnostic sheet applies to vehicles and equipment powered by Caterpillar C11, C13, and C15 diesel engines grouped under the “All Others” classification. These engine platforms are widely used in on-highway Class 8 trucks as well as select vocational and off-highway applications. The DTC 0001-05 specifically addresses the Cylinder #1 injector circuit, making this document relevant whenever that fault code is logged by the engine ECM. Mechanics working on any chassis equipped with these CAT engine models may encounter this code during routine electronic diagnostics. For additional technical resources and service tool information, visit the Caterpillar official support page.
Who needs this injector current DTC manual
Diesel technicians and workshop owners troubleshooting a Cylinder #1 injector current low fault on CAT C11, C13, or C15 engines will find this single-page guide essential. It is also useful for fleet maintenance teams who need a quick-reference DTC sheet to verify wiring, connector integrity, and injector solenoid resistance before replacing components.
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