SPN 5357 FMI 0Fuel SystemHigh
Fuel Filter Differential Pressure — Data Valid But Above Normal
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Overview
Fault Code
SPN 5357 / FMI 0
Category
Fuel System
Fault Type
sensor
FMI Category
above normal
Severity
High
Derate Risk
Yes
Regen Inhibit
No
Inducement Risk
No
Component Location: Fuel filter housing — typically frame rail or engine compartment. Differential pressure sensor on filter housing.
Common Symptoms
- Fuel filter restriction warning active
- Hard start or low power
- Fuel filter differential pressure reading high
- Possible fuel starvation under load
Root Causes
- Fuel filter plugged — normal wear requiring replacement
- Water in fuel causing filter plugging
- Fuel contamination — debris or algae in fuel tank
- Fuel filter differential pressure sensor failure reading high
- Cold weather — waxed fuel plugging filter
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Derate Behavior
Power Derate
Yes
Mileage / Regen Notes
Maintenance-driven. Higher frequency with poor fuel quality or water contamination.
System Interactions
SPN 5357 FMI 0 interacts with the following systems and may trigger cascading faults if not resolved promptly.
Fuel rail pressure — injector timing and quantity affected
Engine power output — derate may be triggered to protect injectors
Aftertreatment regen — low fuel pressure can prevent regen completion
TSB Reference: OEM PM schedule — fuel filter replacement interval typically every 15,000–25,000 miles.
Common Diagnostic Mistakes
Replacing the sensor without verifying wiring continuity and supply voltage first.
Clearing codes without identifying and resolving the root cause — the fault will return.
Ignoring related active faults — cascading faults often share a root cause.
Skipping the connector inspection — corrosion and damaged pins are a leading cause of sensor faults.
Condemning the ECM before exhausting all wiring and component tests.
Replacing injectors without verifying fuel supply pressure — low supply pressure causes injector faults.
Ignoring fuel filter restriction — a clogged filter causes low rail pressure that mimics injector failure.
OEM Notes
Cummins
X15: Replace fuel filter at every PM or when restriction exceeds 15 psi differential.
Detroit
DD15: Check water separator bowl at every PM — drain if water present.
PACCAR
MX-13: Inspect fuel tank vent for plugging — plugged vent causes fuel starvation and false restriction reading.
Related Faults in This Category
OEM System Resources
ASE Training Resources
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Related Diagnostic Articles
Deep-dive diagnostic page: SPN 5357 FMI 0 — Full FSM Sequence & Repair Steps — includes wiring notes, sensor specs, and gated repair procedures.
Authority References
Diagnostic procedures on this page are informed by OEM service literature and industry standards.
Cummins QuickServe OnlineOfficial Cummins service manuals, fault code lookup, and TSB database.Detroit Diesel DiagnoCentralDetroit Diesel diagnostic procedures, DDDL documentation, and service literature.PACCAR MX Engine ServicePACCAR MX-11 and MX-13 engine service documentation and DAVIE diagnostic guides.Volvo/Mack Tech ToolVolvo and Mack engine fault code reference and PTT/Tech Tool diagnostic procedures.ASE — Diesel Truck Technician CertificationNational Institute for Automotive Service Excellence — T2 Diesel Engines certification standards.EPA Aftertreatment & Emissions GuidelinesU.S. EPA heavy-duty diesel aftertreatment compliance, DPF/SCR regulations, and NOx standards.
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