What causes a SPN 3069 code?

SPN 3069 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 3069 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3069 active.

How do I fix SPN 3069?

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 3069

SPN 3069 - Diesel Particulate Filter (DPF) Missing

What it means

The engine control module detects that the DPF substrate is missing, hollowed out, or has extremely low flow restriction compared to stored calibration values.