International (Navistar)
    J1939 SPN/FMI
    SPN 132 / FMI 3

    International Fault Code SPN 132 FMI 3: Engine Intake Air Mass Flow Rate: Voltage Above Normal, Or Shorted To High Source

    SPN 132 FMI 3 on International / Navistar trucks means: Engine Intake Air Mass Flow Rate: Voltage Above Normal, Or Shorted To High Source. The failure mode (FMI 3) is “voltage above normal, or shorted to high source”.

    Code details

    Manufacturer
    International (Navistar)
    Applies to
    International A26 (2024–2025)
    Fault code
    SPN 132 FMI 3
    J1939 SPN
    132
    FMI
    3 — Voltage above normal, or shorted to high source
    Truck models in source
    3200, 4100, 4300, 4400, 7300, 7400, 7500, 7600, 7700, 8500, 8600, BE 200, CE Bus, CXT, DuraStar, LoneStar, MXT, ProStar, RXT, TranStar, WorkStar

    What to do next

    • Read active and inactive codes with the OEM service tool (Diamond Logic Builder can clear previously active codes) and note the occurrence count.
    • FMI 3 tells the shop the type of failure to test for: voltage above normal, or shorted to high 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-Operator

    Run your own truck?

    Log maintenance, track fault codes, and get roadside breakdown dispatch.

    $39.99/mo

    Add this truck & start trial

    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
    Try freeLearn more

    Fleet Maintenance

    From $129/mo
    • Preventive maintenance schedules
    • Driver DVIRs & defect reports
    • Safety & compliance clearance
    • Preferred shop dispatch & approvals
    Try freeLearn more

    My Garage

    100% free
    • Digital glovebox for your vehicles
    • Maintenance history & reminders
    • Recall alerts
    • Book verified local shops
    Join freeLearn more

    Owner-Operator? Track this truck for $39.99/mo

    Start

    Fix these trucks? Get your shop listed free·Find a diesel shop

    Related fault codes

    Source: International A26 2024–2025 fault code list (Diesel Laptops). See also OBD-II codes.