What causes a SPN 2698 code?

SPN 2698 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 2698 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 2698 active.

How do I fix SPN 2698?

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 2698

J1939 SPN 2698 — Aftertreatment/Emissions parameter

What it means

J1939 Aftertreatment 1 Intake O2 Sensor / Exhaust Data Validity. This code represents a mismatch or corruption in the data relating to the emissions state, often triggered when the module detects data that is mathematically impossible based on current engine operation.