This document is a CAT PTO Shutdown troubleshooting guide covering diagnostic code 0071-14 PTO Shutdown (47) for Caterpillar 3406E, C-10, and C-12 on-highway truck engines. It explains the conditions that generate the code, the ECM system response, and the required test procedure to resolve the shutdown event.
Official CAT PTO Shutdown document details
| Brand | Caterpillar (CAT) |
| Model coverage | C-12 Truck Engine 9NS; 3406E, C-10, C-12 On-highway Engines (8YS, 9NS, 5DS, 1LW) |
| System / Group | DTCs — SMCS 1901-038 (PTO System) |
| Publication no. | RENR1328-08 |
| Year / Revision | Published 01/10/2008, Updated 16/10/2008 |
| Pages | 1 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- 0071-14 PTO Shutdown (47) — Conditions Which Generate This Code
- System Response — ECM behavior after engine shutdown
- Auxiliary output programming notes (outputs 02, 03, 04)
- Customer Password requirement to clear the diagnostic code
- Test Step 1: PTO Shutdown Timer — Test procedure and results
Applicable truck models
This troubleshooting bulletin applies to Caterpillar on-highway truck engines in the 3406E, C-10, and C-12 families, specifically configurations identified by serial prefixes 8YS, 9NS, 5DS, and 1LW. The C-12 Truck Engine 9NS00001-UP is explicitly listed. These engines are commonly found in Class 8 heavy-duty trucks from multiple OEMs. The document addresses the PTO shutdown timer diagnostic event where the ECM detects that the timer has expired and shuts the engine down. When auxiliary output 02, auxiliary output 03, or auxiliary output 04 are programmed to “Engine Shutdown Output,” the ECM and portions of the truck electrical system will also be shut down. A Customer Password is required to clear the diagnostic code. For additional Caterpillar technical resources, visit Caterpillar official support.
Who needs this CAT PTO Shutdown manual
Fleet mechanics and workshop owners servicing Caterpillar 3406E, C-10, or C-12 powered trucks will need this reference when DTC 0071-14 appears on the electronic service tool. It provides the exact test step — PTO Shutdown Timer Test — and clarifies password requirements for code clearing, making it essential for efficient diagnosis.
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