This page covers the Detroit fault code SPN 5358 FMI 16, the Cylinder #1 Engine Smoothness Control / Quantity Low diagnostic on DD Platform engines. It details the trigger, the monitored parameter, and the factory repair sequence for GHG14 builds.
Official document details
| Brand | Detroit |
| Model coverage | Detroit DD13, DD15, DD16 and Series 60 (DDEC VI) |
| System / Group | DD Series (EPA 2007-Current) / DTCs |
| Source | TruckFaultCodes.com |
| Year / Revision | 2017 (GHG14) |
| Pages | 3 |
| File size | 0.29 MB |
| Format | |
| Language | English |
SPN 5358 FMI 16 table of contents
- Fault code description and causes
- Monitored parameter and enabling conditions
- Relative Cylinder Compression Test
- Idle Speed Balance (ISB) values
- High pressure fuel line inspection
The code is caused by low power on cylinder #1. The MCM2.1 trims injector pulse for a smooth idle and sets the fault once the minimum value is reached. The monitored parameter is Cylinder 1 Fueling Error under Engine Smoothness Control, typical duration 2 seconds, MIL illuminated, no engine reaction.
Entry conditions require engine speed above low idle, all cylinders active with no fault reactions, and steady speed/torque. Causes listed are cylinder kit failure, valve train failure, lash adjustments, a fuel injector, high pressure fuel line damage from rail to injector, and debris entering the injector.
Applicable truck models
The document applies to Detroit DD13, DD15 and DD16 engines under EPA 2007 / GHG14, with cross-reference to Series 60 (DDEC VI). All measurements use the diesel diagnostic tool, and injector and fuel line replacement follow the Three-Filter System procedures in Power Service Literature. See Detroit’s official website for dealer support.
Who needs this SPN 5358 FMI 16 manual
Diesel technicians and shop owners troubleshooting a cylinder #1 balance concern or rough idle on DD Series engines use this guide to confirm the root cause before ordering an injector or performing engine mechanical work.
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