What causes a SPN 886 code?

SPN 886 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 886 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 886 active.

How do I fix SPN 886?

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 886

J1939 SPN 886 — Engine Management parameter

What it means

J1939 Engine Management Parameter. This code indicates a communication failure or data error regarding specific engine parameters being transmitted across the J1939 data link to other modules (like the Instrument Cluster or Transmission).