This 1-page PDF documents the CAT C11 0003-06 DTC 0003-06, which addresses a Cylinder #3 injector current high fault condition on Caterpillar diesel engines. It provides the diagnostic trouble code description, possible causes, and recommended troubleshooting steps for technicians working on affected engine platforms.
Official CAT C11 0003-06 DTC document details
| Brand | Caterpillar (CAT) |
| Model coverage | C11, C13, C15 (All Others) |
| System / Group | Diagnostic Trouble Codes (DTCs) |
| Publication no. | N/A |
| Year / Revision | Unknown |
| Pages | 1 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- DTC 0003-06 — Cylinder #3 Injector Current High
- Fault description and conditions
- Possible causes of high injector current
- Recommended diagnostic and troubleshooting steps
Applicable truck models
This diagnostic reference applies to Caterpillar C11, C13, and C15 diesel engines classified under the “All Others” group. These engine families are widely installed in Class 8 highway trucks, vocational vehicles, and heavy equipment from multiple OEMs. The DTC 0003-06 fault — Cylinder #3 injector current high — can appear on any application using these electronically controlled CAT engines with HEUI or common-rail fuel injection systems. Workshops encountering this code should cross-reference the specific engine serial number prefix to confirm coverage. For additional Caterpillar service literature and serial-number-based parts lookup, visit Caterpillar’s official support page.
Who needs this CAT C11 0003-06 DTC manual
Diesel technicians and workshop owners diagnosing injector circuit faults on Caterpillar C11, C13, or C15 engines will find this reference essential. It targets professionals who need quick guidance on isolating a high-current condition at the Cylinder #3 injector, whether the root cause is a wiring fault, failed injector solenoid, or ECM driver issue.
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