What causes a SPN 902 code?

SPN 902 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 902 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 902 active.

How do I fix SPN 902?

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 902

J1939 SPN 902 — Engine Management parameter

What it means

J1939 SPN 902 refers to a failure or data error related to an 'Engine Management' parameter transmitted over the J1939 network. It often indicates that expected data is missing or corrupted.