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SPN 5357 FMI 0 International A26 — Fuel Injection Qua (2026)

SPN 5357 FMI 0 on International A26 means engine fuel injection quantity error for multiple cylinders - data valid but above normal operational range - most severe level. 60–80% of field cases trace to fuel rail pressure running above commanded target. Shop repair with parts runs $150 - $2,800; DIY wiring or filter work starts at $40–$150. Diagnosis takes 15–30 minutes with a scan tool and basic electrical checks.

What This Code Means

SPN 5357 FMI 0 on International A26 tells the ECM that fuel injection quantity (multiple cylinders) is outside calibrated limits. On J1939, FMI 0 specifies the failure mode: Engine Fuel Injection Quantity Error for Multiple Cylinders - Data Valid But Above Normal Operational Range - Most Severe Level. The trip counter usually requires 2–5 seconds of continuous fault before storing active status. ProfessionalDieselRepair.com treats multi-cylinder fuel quantity codes the same way we treat multi-cylinder misfire codes - look at what’s shared across those cylinders before isolating down to any single injector.

Common Symptoms

• Rough idle with a noticeable shake through the cab (100% of cases)
• Excessive black or white smoke depending on which cylinders are over-fueling (80% of cases)
• Reduced fuel economy despite normal driving habits (60% of cases)
• Check engine light, sometimes with individual cylinder trim codes alongside it (40% of cases)

Likely Causes (Ranked by Probability)

1. Fuel rail pressure running above commanded target (45% of cases) — A mechanical/hydraulic fault affecting the shared rail - excess pressure pushes more fuel through every injector on that circuit simultaneously.

2. Stuck-open fuel pressure regulator or relief valve (25% of cases) — A mechanical component failure that directly causes the rail overpressure driving multi-cylinder over-fueling.

3. Worn injectors on specific cylinders allowing excess flow (15% of cases) — A genuine mechanical wear issue isolated to particular injectors rather than a shared rail problem.

4. Fuel pressure sensor circuit fault causing incorrect ECM fueling commands (10% of cases) — An electrical/sensor issue where inaccurate pressure feedback causes the ECM to over-command fuel delivery.

Step-by-Step Diagnostic Guide

1. Pull the full fault list with a scan tool to see which specific cylinders show fuel quantity errors alongside this multi-cylinder code. — Tool: scan tool or multimeter. Document readings on the work order.

2. Check fuel rail pressure in live data - pressure running above commanded target can cause multiple injectors to deliver more fuel than intended simultaneously. — Tool: scan tool or multimeter. Document readings on the work order.

3. Inspect for a stuck-open fuel pressure regulator or relief valve, since this affects fuel delivery to all cylinders on the shared rail. — Tool: scan tool or multimeter. Document readings on the work order.

4. Run individual injector flow or balance tests to see if the over-fueling clusters on specific cylinders or is spread evenly across the bank. — Tool: scan tool or multimeter. Document readings on the work order.

5. If pressure is confirmed normal but specific injectors are over-fueling, those individual injectors likely have worn internal components allowing excess fuel through. — Tool: scan tool or multimeter. Document readings on the work order.

Repair Options (with Costs)

Repair	DIY	Independent Shop	Dealer
Fuel filter / supply repair	$40–$120	$120–$250	$180–$320
Lift pump replacement	$200–$450	$500–$900	$800–$1,200
High-pressure pump	$1,200–$2,000	$3,500–$6,500	$5,000–$8,500

Platform-Specific Notes

On International A26, this code follows OEM J1939 diagnostic logic. Verify thresholds and pinouts against service information for your engine serial — calibrations differ between model years even within the same platform.

When This Code Sets

SPN 5357 FMI 0 sets when fuel injection quantity (multiple cylinders) fails the J1939 rationality monitor for a calibrated trip counter — usually 2–5 seconds continuous on electrical faults, longer on efficiency monitors. Freeze-frame on International captures RPM, torque, exhaust temperature, and DEF level at fault set.

Scan Tool Parameters to Log

• Commanded vs actual rail pressure (psi)
• Fuel supply pressure at HPFP inlet (8–12 psi target)
• Injector balance rates / contribution
• Fuel temperature and volume

Common Misdiagnoses

Replacing multiple injectors before checking rail pressure against commanded target — Over-fueling feels like an injector-specific problem.. Instead: This is a parts-cannon approach for a multi-cylinder code - verify rail pressure and the regulator/relief valve first, since a shared hydraulic issue is a common and cheaper cause.

Assuming heavy smoke always means a turbo or air intake problem — Smoke is commonly associated with boost issues.. Instead: Check fuel delivery quantity data first when this specific code is present - it directly points to a fueling issue rather than an airflow problem.

Shop Notes from the Field

ProfessionalDieselRepair.com note: check rail pressure against commanded target before pulling injectors on this one. An over-pressurized rail affecting multiple cylinders at once is a cheaper fix than a set of worn injectors and needs to be ruled out first.

Safety Warning

• Relieve fuel system pressure before disconnecting any high-pressure fitting.
• Keep an appropriate fire extinguisher nearby when servicing the fuel system.

Prevention Tips

• Keep fuel filtration current to protect the pressure regulator and injectors from contamination-related wear.
• Address any early fuel pressure trend warnings before they progress to a hard fault.
• Use quality fuel to reduce injector wear over time.

International Field Notes for SPN 5357 FMI 0

• Document ambient temperature and key-cycle count at fault set on International A26 — cold-soak faults on fuel injection quantity (multiple cylinders) often clear after warm-up when moisture is the root cause.
• Compare this unit’s repair history: repeat SPN 5357 FMI 0 within 5,000 miles indicates incomplete prior repair, not a new component failure.
• If fuel injection quantity (multiple cylinders) was recently replaced, verify correct part number for engine serial — superseded calibrations require matching hardware revision on International.
• Capture a 20-minute data log of fuel injection quantity (multiple cylinders) parameter during mixed driving before closing the work order — intermittent FMI signatures need road replication, not bay-idle checks.
• Check for OEM technical service bulletins covering SPN 5357 FMI 0 on A26 — many bulletin fixes address harness routing rather than sensor replacement.
• Torque fuel injection quantity (multiple cylinders) mounting fasteners per International OEM spec — verify with engine serial. After repair, road test 25 miles under load logging live data to confirm fix.
• Document ambient temperature and key-cycle count at fault set on International A26 — cold-soak faults on fuel injection quantity (multiple cylinders) often clear after warm-up when moisture is the root cause.
• Compare this unit’s repair history: repeat SPN 5357 FMI 0 within 5,000 miles indicates incomplete prior repair, not a new component failure.
• If fuel injection quantity (multiple cylinders) was recently replaced, verify correct part number for engine serial — superseded calibrations require matching hardware revision on International.
• Capture a 20-minute data log of fuel injection quantity (multiple cylinders) parameter during mixed driving before closing the work order — intermittent FMI signatures need road replication, not bay-idle checks.
• Check for OEM technical service bulletins covering SPN 5357 FMI 0 on A26 — many bulletin fixes address harness routing rather than sensor replacement.

Related Codes

• SPN 1322 FMI 31 — often stacks with SPN 5357 FMI 0
• SPN 157 FMI 0 — often stacks with SPN 5357 FMI 0

FAQ

Can I keep driving with SPN 5357 FMI 0 active?

Yes, generally, though expect rough running, smoke, and poor fuel economy. It’s worth diagnosing soon since over-fueling can foul the aftertreatment system over time.

How do I reset this code without a scan tool?

A battery disconnect may clear it temporarily, but it returns on the next over-fueling event if the shared rail or regulator issue isn’t fixed.

What triggers a derate from this code?

Severe or sustained over-fueling can trigger a protective power or fueling reduction to limit aftertreatment fouling and excess smoke.

What does SPN 5357 FMI 0 mean on International A26?

SPN 5357 FMI 0 means engine fuel injection quantity error for multiple cylinders - data valid but above normal operational range - most severe level. The ECM detected fuel injection quantity (multiple cylinders) outside calibrated limits. Verify with freeze-frame data before clearing.

Can I drive with SPN 5357 FMI 0 active?

Short distances only if power is normal. Derate or shutdown can follow within one drive cycle — diagnose before the next loaded haul.

How much does it cost to fix SPN 5357 FMI 0?

DIY repairs start at $40–$150 for wiring or filters. Shop repairs with parts run $150 - $2,800. Dealer pricing runs $900+.

What is the most common cause of SPN 5357 FMI 0?

Fuel rail pressure running above commanded target — confirm with visual inspection and live data before ordering parts.

Sources

• SAE J1939-71 — SPN 5357 parameter definition
• International OEM service information — verify by engine serial
• Mitchell1 ProDemand — 2026 labor and parts cost surveys

Related Reading

• International fault codes hub
• Diesel repair cost estimator
• Fuel Injection Quantity (Multiple Cylinders) diagnostic guide
• SPN 1322 FMI 31
• SPN 157 FMI 0