What causes a SPN 3567 code?

SPN 3567 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 3567 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3567 active.

How do I fix SPN 3567?

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 3567

J1939 SPN 3567 — Body/Chassis parameter

What it means

The Body/Chassis parameter fault (SPN 3567) indicates a communication error or circuit fault related to the vehicle's secondary systems, such as exterior lighting, PTO controls, or auxiliary body equipment managed via the J1939 data link.