SPN 520267 FMI 19 is the Detroit fault code for erratic, intermittent or incorrect MCM2.1 engine hours data, and this 1-page PDF explains the condition. It usually occurs after reprogramming the CPC4 or MCM2.1 when the modules’ internal clocks do not match.
Official document details
| Brand | Detroit |
| Model coverage | DD Series (EPA 2007-current); also Series 60 (DDEC VI) |
| System / Group | Diagnostic Trouble Codes (DTCs) |
| Fault code | SPN 520267, FMI 19 |
| Year / Revision | Copyright 2017 (TruckFaultCodes.com) |
| Pages | 1 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Fault code identification (SPN and FMI)
- Description of the engine hours data error
- MCM2.1 versus CPC4 digital output note
- Clearing all fault codes after reprogramming
Applicable models for SPN 520267 FMI 19
This diagnostic trouble code applies to Detroit DD13, DD15 and DD16 engines built to EPA 2007 and later standards, and to the Series 60 (DDEC VI) set. Note that the CPC4 digital outputs share some SPNs with MCM2.1 faults; the diesel diagnostic tool distinguishes the two. For programming guidance and dealer support, see the official Detroit Diesel website.
Who needs this 520267 FMI 19 guide
Technicians who see this code after reprogramming the CPC4 or MCM2.1 use this guide to confirm it is a clock-mismatch condition and to clear all fault codes so the data resynchronises. This library page summarises the official Detroit fault-code sheet published on TruckFaultCodes.com (Copyright 2017) and is meant as a quick reference. Because the correct fix depends on module software levels and configuration, confirm the latest software release and programming steps against current Detroit Power Service Literature and the diesel diagnostic tool before replacing any hardware. After reprogramming, clear all fault codes and re-test; if the code stays active, contact the Detroit Customer Support Center at 800-445-1980 with your diagnostic log files. The complete PDF is available in the DiagTechPro manuals library, where a free account is required to download.
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