SPN 1482 FMI 31ABS
Stability Control System Active - Condition Exists
Scan Tool — in guided session
DVOM Testing — in guided session
Connector Pinout — in guided session
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Overview
Fault Code
SPN 1482 / FMI 31
Category
ABS
Derate Risk
No
Regen Inhibit
No
Inducement Risk
No
Component Location: Stability control module is typically integrated with the ABS control unit mounted on the chassis frame rail near the brake valves.
Common Symptoms
- ABS lamp illuminated
- Stability control active lamp on
- Traction control intervention active
- Vehicle speed reduction during stability event
- ABS ECU storing active stability intervention event
- Roll stability control engaging
- Automatic trailer stability control active
Root Causes
- Wheel speed sensor signal discrepancy triggering stability intervention Low air pressure affecting ABS modulator valve response Faulty lateral accelerometer or yaw rate sensor ABS modulator valve mechanical issue causing unwanted brake application Contaminated or damaged wheel speed sensor tone ring
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Derate Behavior
Power Derate
No
System Interactions
SPN 1482 FMI 31 interacts with the following systems and may trigger cascading faults if not resolved promptly.
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.
Related Faults in This Category
OEM System Resources
ASE Training Resources
Diagnostic Engine v7.0
Related Diagnostic Articles
Deep-dive diagnostic page: SPN 1482 FMI 31 — 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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