What causes a SPN 874 code?

SPN 874 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 874 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 874 active.

How do I fix SPN 874?

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 874

J1939 SPN 874 — Engine Management parameter

What it means

The Engine Management Parameter fault occurs when there is a mismatch or configuration error within the internal settings of the Engine Control Module (ECM) related to vehicle-specific governing or performance parameters.