2 Yanmar CE diagnostic codes on file. Each shows the symptom for free — unlock the full diagnosis, repair steps, and field insights with a free account.
| Code | System | Symptom | Fix |
|---|---|---|---|
| SPN 520288 FMI 14 | Emissions / DEF | DEF Warning Lamp / Active Derate (50%) | Unlock |
| SPN 520301 FMI 14 | Engine / DPF | Active Engine Derate / DPF Lamp Solid | Unlock |
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