Cummins
Cummins fault code
SPN 94 / FMI 4
Cummins Fault Code 547: Fuel Delivery Pressure Sensor Circuit- shorted low
547 on Cummins engines means: Fuel Delivery Pressure Sensor Circuit- shorted low. The failure mode (FMI 4) is “voltage below normal, or shorted to low source”.
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
- 547
- J1939 SPN
- 94
- FMI
- 4 — Voltage below normal, or shorted to low source
- J1587 PID / SID
- P094
- Engine models
- QSX15
What to do next
- Read active and inactive codes with the OEM service tool and note the occurrence count.
- FMI 4 tells the shop the type of failure to test for: voltage below normal, or shorted to low source.
- 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.
Owner-OperatorAdd this truck & start trial
Run your own truck?
Log maintenance, track fault codes, and get roadside breakdown dispatch.
$39.99/mo
Cancel anytime
More ways Repairius keeps vehicles running
Tools for owner-operators, shops, fleets and drivers — all in one place.
Auto & Truck Shop OS
From $99.99/mo- Work orders & job management
- Digital vehicle inspections
- Parts lookup & inventory
- Estimates, invoices & payments
Fleet Maintenance
From $129/mo- Preventive maintenance schedules
- Driver DVIRs & defect reports
- Safety & compliance clearance
- Preferred shop dispatch & approvals
My Garage
100% free- Digital glovebox for your vehicles
- Maintenance history & reminders
- Recall alerts
- Book verified local shops
Owner-Operator? Track this truck for $39.99/mo
StartFix these trucks? Get your shop listed free·Find a diesel shop
Related fault codes
- Cummins Fault Code 268 — Fuel Pressure Sensor Circuit - data incorrect
- Cummins Fault Code 546 — Fuel Delivery Pressure Sensor Circuit - shorted high
- 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 15. See also OBD-II codes.