Cummins
Cummins fault code
SPN 103 / FMI 16
Cummins Fault Code 595: Turbocharger #1 Speed High - warning level
595 on Cummins engines means: Turbocharger #1 Speed High - warning level. The failure mode (FMI 16) is “data valid but above normal range (moderately severe)”.
Lamp: Yellow
Engine may continue to run, but must be repaired the same day.
Code details
- Manufacturer
- Cummins
- Applies to
- Cummins QS-series electronic engines
- Fault code
- 595
- J1939 SPN
- 103
- FMI
- 16 — Data valid but above normal range (moderately severe)
- J1587 PID / SID
- P103
- Engine models
- QSX15
What to do next
- Read active and inactive codes with the OEM service tool and note the occurrence count.
- FMI 16 tells the shop the type of failure to test for: data valid but above normal range (moderately severe).
- Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.
Get this code diagnosed
Send one request and nearby diesel shops and mobile mechanics can quote the repair.
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Related fault codes
- PACCAR Fault Code P102C — VTG Turbocharger Turbine – Malfunction
- PACCAR Fault Code P1580 — Turbocharger Speed – Data Valid But Too High
- PACCAR Fault Code P1581 — Turbocharger Speed – Data Valid But Too Low
- PACCAR Fault Code P2579 — Turbocharger Speed – Abnormal Rate of Change
- PACCAR Fault Code P2580 — Turbocharger Speed – Data Valid But Too Low, Least Severe on ECU (D420) Pin (C20)
- PACCAR Fault Code P2581 — Turbocharger Speed – Data Valid But Too High, Least Severe on ECU (D420) Pin (C20)
- PACCAR Fault Code P0049 — Turbo Speed – Higher than Overspeed Limit
- PACCAR Fault Code P1235 — Turbo Speed – Data Erratic, Intermittent, or Incorrect
Source: Cummins "Diagnostic Fault Codes For Cummins Engines", publication 80-1044 Rev 5/2013, page 16. See also OBD-II codes.