What causes a SPN 413 code?

SPN 413 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 413 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 413 active.

How do I fix SPN 413?

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 413

J1939 SPN 413 — Fuel/Air parameter

What it means

SPN 413 indicates an abnormality in the Fuel/Air ratio parameter data transmitted over the J1939 network, typically signifying the engine is unable to maintain the commanded stoichiometric or lean-burn ratio.