What causes a SPN 5018 code?

SPN 5018 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 5018 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 5018 active.

How do I fix SPN 5018?

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 5018

Detroit DD13/DD15/DD16 SPN 5018

What it means

OBD High Soot Load Condition / Aftertreatment 1 DPF Intake Pressure - Data Valid But Above Normal Operating Range - Least Severe Level.