What causes a SPN 353 code?

SPN 353 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 353 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 353 active.

How do I fix SPN 353?

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 353

J1939 SPN 353 — Fuel/Air parameter

What it means

SPN 353 is a parameter identifier for the Fuel/Air ratio. It indicates that the engine's management system has detected a discrepancy between the measured intake air mass and the commanded fuel delivery.