What causes a SPN 5922 code?

SPN 5922 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 5922 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 5922 active.

How do I fix SPN 5922?

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 5922

Cummins fault code 5922

What it means

Cylinder Head Exhaust Port Soot Loading - Data Valid But Above Normal Operating Range - Least Severe Level. This code indicates the ECM has detected significant soot buildup in the exhaust ports of the cylinder head.