What causes a SPN 718 code?

SPN 718 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 718 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 718 active.

How do I fix SPN 718?

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 718

J1939 SPN 718 — Engine Management parameter

What it means

SPN 718 indicates a generic failure or invalid data related to 'Engine Management' parameters transmitted over the J1939 data link. It often signifies that a controller is receiving data it doesn't recognize or that essential engine configuration data is missing.