5 Yanmar diagnostic codes on file — with the full diagnosis, repair steps, and field insights open to read free, no signup required.
Disclaimer: General reference information for trained, qualified technicians only. Codes and procedures vary by model, serial number and software version. Always follow the manufacturer's service manual and your site's safety procedures. Use at your own risk. Not affiliated with or endorsed by any manufacturer.
Find a Yanmar code by searching below, or browse the table. Codes on file by system:
| Code | System | Symptom | Full fix |
|---|---|---|---|
| 1204 | Engine / Glow | White Smoke / Engine Cranks Long When Cold | View fix |
| P0117 (SPN 110 FMI 4) | — | Engine fan at 100%; High temp alarm; Engine derate; Gauge pinned at Hot. | View fix |
| SPN 3509 FMI 04 | Electrical / Engine | Engine Won't Crank / ECU Warning Lamp | View fix |
| SPN 676 FMI 05 | Starting / Glow Plugs | Long Cranking in Cold / White Smoke at Start | View fix |
| SPN 970 FMI 31 | Safety / Interlock | No Crank / Ignition Key Switch Unresponsive | View fix |
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