What causes a SPN 3319 code?

SPN 3319 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 3319 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3319 active.

How do I fix SPN 3319?

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 3319

J1939 SPN 3319 — Body/Chassis parameter

What it means

J1939 SPN 3319 relates to a generic Body/Chassis parameter fault, often indicating that a specific data signal required by the engine or aftertreatment system from the body controller is missing, invalid, or improperly configured.