10 Global SCR 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 1761 FMI 1 / 18 | — | Empty tank warning when full; Machine shutdown; Alarm buzzer. | Unlock |
| SPN 3031 FMI 2 / 9 | — | DEF pump won't engage; Code appears during cold weather; High fuel use. | Unlock |
| SPN 3216 FMI 13 / 20 | — | Intermittent Check Engine Light; Sudden derate; Inconsistent emissions data. | Unlock |
| SPN 3361 FMI 31 | — | Sudden shutdown or 5 MPH limit; No other active codes; Very difficult to clear. | Unlock |
| SPN 3364 FMI 2 / 17 | — | Engine derate; "DEF Symbol" flashing; Machine may eventually lock into 5 MPH or Idle-only. | Unlock |
| SPN 4334 FMI 3 / 4 | — | Engine derate; DEF system failure; Possible white smoke from exhaust. | Unlock |
| SPN 4363 FMI 0 / 16 | — | Black smoke; Poor engine performance; High exhaust backpressure. | Unlock |
| SPN 4364 FMI 18 | — | Progressive power loss; "Emissions Failure" warning; Excessive DEF consumption. | Unlock |
| SPN 5246 FMI 15 | — | Dash says "Derate in 30 Minutes"; Alarm beeping; Yellow/Amber warnings. | Unlock |
| SPN 5394 FMI 5 | — | "DEF System Error"; No dosing heard; DEF level stays static for days. | Unlock |
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