What causes a SPN 564 code?

SPN 564 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 564 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 564 active.

How do I fix SPN 564?

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 564

J1939 SPN 564 — Engine Management parameter

What it means

This code indicates that the Engine Management System has received an invalid, out-of-range, or missing parameter configuration via the J1939 data link.