This one-page PDF documents the CAT C11 0004-06 diagnostic trouble code 0004-06, which flags Cylinder #4 Injector current high on Caterpillar C11, C13, and C15 engines. It provides the fault description, conditions for setting the code, and the recommended troubleshooting steps for technicians working on these heavy-duty diesel platforms.
CAT C11 0004-06: Official CAT C11 0004-06 DTC document details
| Brand | Caterpillar (CAT) |
| Model coverage | C11, C13, C15 (All Others) |
| System / Group | DTCs — Diagnostic Trouble Codes |
| Publication no. | N/A |
| Year / Revision | Unknown |
| Pages | 1 |
| File size | 0.3 MB |
| Format | |
| Language | English |
CAT C11 0004-06: Document table of contents
- DTC 0004-06 — Cylinder #4 Injector Current High
- Fault description and conditions for code activation
- Diagnostic and troubleshooting procedure
Applicable truck models
This document applies to all Caterpillar C11, C13, and C15 diesel engines grouped under the “All Others” classification. These engine families power a wide range of on-highway Class 8 trucks and vocational vehicles from manufacturers such as Kenworth, Peterbilt, and Western Star, as well as certain off-highway and industrial applications. Workshops servicing any equipment fitted with these CAT engines will find this DTC reference relevant. For additional technical resources and parts information, visit Caterpillar’s official support page.
Who needs this C15 injector current DTC manual
Fleet mechanics, independent diesel technicians, and workshop owners diagnosing a Cylinder #4 injector fault on Caterpillar C11, C13, or C15 engines need this reference. It is especially useful when the ECM logs code 0004-06 indicating injector current above the expected threshold, allowing the technician to follow a structured path toward isolating the root cause.
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