What causes a SPN 367 code?

SPN 367 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 367 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 367 active.

How do I fix SPN 367?

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 367

J1939 SPN 367 — Fuel/Air parameter

What it means

Engine Fuel/Air Control Parameter. This indicates a mismatch or failure in the system responsible for managing the precise mixture of fuel and air for combustion.