This PDF is the official CAT C15 engine shutdown troubleshooting procedure for diagnostic code 0071-07, published by Caterpillar for on-highway truck engines. It explains the conditions that trigger an automatic engine shutdown — low coolant level, low oil pressure, or high coolant temperature — and provides the step-by-step test procedure to identify and resolve the underlying fault.
Official CAT C15 engine shutdown document details
| Brand | Caterpillar (CAT) |
| Model coverage | C15 Truck Engine — MXS (C15 On-Highway Truck MXS00001-UP) |
| System / Group | Engine Protection System — DTC 0071-07 Engine Shutdown Occurrence (SMCS 1901-038) |
| Publication no. | RENR5088-10 |
| Year / Revision | Published 01/02/2009, updated 25/02/2009 |
| Pages | 2 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- Conditions Which Generate This Code (low coolant level, low oil pressure, high coolant temperature)
- System Response (engine shutdown behavior, Factory Password requirement)
- Test Step 1 — Look for related diagnostic codes and proceed to appropriate troubleshooting procedure
Applicable truck models
This document applies to the Caterpillar C15 on-highway truck engine in the MXS configuration (serial prefix MXS00001-UP). The C15 is widely used in Class 8 heavy-duty trucks from manufacturers such as Peterbilt, Kenworth, and Freightliner. The configurations NKS and RKS within the C15 family may share similar engine protection logic, but this specific publication addresses the MXS serial range. For additional technical resources and parts information, visit Caterpillar’s official support page.
Who needs this CAT C15 engine shutdown manual
Fleet mechanics, independent repair shops, and workshop owners diagnosing a CAT C15 that has shut down unexpectedly due to an engine protection event will find this document essential. It is particularly useful when the ECM logs DTC 0071-07 and a Factory Password is required to clear the code after resolving the root cause.
The document explains that the Engine Control Module (ECM) triggers code 0071-07 when it detects one of three critical conditions: low coolant level, low oil pressure, or high coolant temperature. The code itself does not degrade engine performance — performance effects come from the underlying diagnostic codes for each condition. The prescribed troubleshooting approach in Test Step 1 directs the technician to check for active diagnostic codes related to coolant level, oil pressure, or coolant temperature and then follow the corresponding repair procedure. Once the underlying fault is corrected and verified, a Factory Password must be used to clear the CAT C15 engine shutdown occurrence code from the ECM.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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