What causes a SPN 358 code?

SPN 358 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 358 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 358 active.

How do I fix SPN 358?

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 358

J1939 SPN 358 — Fuel/Air parameter

What it means

SPN 358 indicates a configuration or parameter error related to the Fuel/Air ratio control strategy. The ECM is reporting that the pre-defined fuel/air mapping is missing, invalid, or out of range.