What causes a SPN 3425 code?

SPN 3425 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a SPN 3425 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3425 active.

How do I fix SPN 3425?

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBDIY

J1939 SPN

SPN 3425

J1939 SPN 3425 — Body/Chassis parameter

What it means

PGN Configuration Error. This code indicates that the control module (typically the VECU or Chassis Node) has detected a configuration mismatch or missing data related to body/chassis parameters.