SPN 3357 FMI 13Brakes
ABS ECU Calibration - Out of Calibration
Scan Tool — in guided session
DVOM Testing — in guided session
Connector Pinout — in guided session
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Overview
Fault Code
SPN 3357 / FMI 13
Category
Brakes
Derate Risk
No
Regen Inhibit
No
Inducement Risk
No
Component Location: ABS ECU is typically mounted on the frame rail or inside a chassis-mounted electrical enclosure near the brake system components.
Common Symptoms
- ABS warning lamp illuminated
- Traction control system disabled or inactive
- Stability control system disabled or inactive
- ABS system inoperative
- Reduced braking performance alerts
- Communication errors with ABS module
Root Causes
- ABS ECU software version incompatible with vehicle configuration Corrupted ABS ECU calibration data Incorrect ABS ECU replacement without proper programming Vehicle configuration change not updated in ABS ECU ABS ECU memory fault or internal data corruption
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Derate Behavior
Power Derate
No
System Interactions
SPN 3357 FMI 13 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.
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OEM System Resources
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Related Diagnostic Articles
Deep-dive diagnostic page: SPN 3357 FMI 13 — 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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