What causes a SPN 3359 code?

SPN 3359 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 3359 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3359 active.

How do I fix SPN 3359?

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 3359

SPN 3359 FMI 31 Diesel Particulate Filter Outlet Temperature

What it means

Indicates a fault or measurement discrepancy in the exhaust gas temperature sensor located at the outlet of the Diesel Particulate Filter (DPF). This sensor is critical for monitoring regeneration efficiency and protecting the aftertreatment system.