2 SDLG 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 |
|---|---|---|---|
| Code 1204 / E1204 | Transmission | Transmission Won't Shift / Stuck in 2nd | Unlock |
| SPN 522105 FMI 3 | Hydraulics | Engine Bog / Black Smoke on Any Dig | Unlock |
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