What causes a SPN 714 code?

SPN 714 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 714 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 714 active.

How do I fix SPN 714?

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 714

J1939 SPN 714 — Engine Management parameter

What it means

J1939 Data Link Error - Engine Management Parameter. This indicates a communication failure on the backbone of the vehicle's network specifically related to engine data transmission.