What causes a SPN 3407 code?

SPN 3407 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 3407 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3407 active.

How do I fix SPN 3407?

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 3407

J1939 SPN 3407 — Body/Chassis parameter

What it means

J1939 SPN 3407 usually refers to a configuration or communication error regarding Body/Chassis data sent over the CAN bus. It indicates the ECM is receiving invalid or missing data regarding chassis-specific parameters.