Cummins
Cummins fault code
SPN 94 / FMI 2
Cummins Fault Code 268: Fuel Pressure Sensor Circuit - data incorrect
268 on Cummins engines means: Fuel Pressure Sensor Circuit - data incorrect. The failure mode (FMI 2) is “data erratic, intermittent or incorrect”.
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
- 268
- J1939 SPN
- 94
- FMI
- 2 — Data erratic, intermittent or incorrect
- J1587 PID / SID
- P094
- Engine models
- QSC, QSL9
What to do next
- Read active and inactive codes with the OEM service tool and note the occurrence count.
- FMI 2 tells the shop the type of failure to test for: data erratic, intermittent or incorrect.
- 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
- Cummins Fault Code 546 — Fuel Delivery Pressure Sensor Circuit - shorted high
- Cummins Fault Code 547 — Fuel Delivery Pressure Sensor Circuit- shorted low
- International SA 33 SPN 94 FMI 4 — Fuel Inlet Restriction Lamp
- International SA 33 SPN 94 FMI 6 — Fuel Inlet Restriction Lamp
- PACCAR Fault Code P0087 — Fuel Pressure – Data Valid But Too Low, Most Severe
- PACCAR Fault Code P1086 — Common Rail Fuel Pressure – Increase Too Slow
- PACCAR Fault Code P1087 — Fuel Pressure – Data Valid But Too Low, Moderately Severe
- PACCAR Fault Code P1564 — Fuel Pressure – Data Erratic, Intermittent or Incorrect, at Ignition ON
Source: Cummins "Diagnostic Fault Codes For Cummins Engines", publication 80-1044 Rev 5/2013, page 7. See also OBD-II codes.