What causes a SPN 3062 code?

SPN 3062 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 3062 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3062 active.

How do I fix SPN 3062?

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 3062

SPN 3062 Aftertreatment Diesel Oxidation Catalyst (DOC) Intake Pressure

What it means

This fault indicates that the Diesel Oxidation Catalyst (DOC) intake pressure is either out of range or not meeting expected parameters, potentially indicating a sensor failure or exhaust restriction.