What causes a SPN 587 code?

SPN 587 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 587 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 587 active.

How do I fix SPN 587?

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 587

J1939 SPN 587 — Engine Management parameter

What it means

J1939 SPN 587 indicates that the Engine Control Module has received or broadcasted an invalid or inconsistent Engine Management parameter, often related to the configuration state or calibration data.