What causes a SPN 3497 code?

SPN 3497 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 3497 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3497 active.

How do I fix SPN 3497?

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 3497

J1939 SPN 3497 — Body/Chassis parameter

What it means

Diesel Exhaust Fluid (DEF) Tank Level sensor circuit or logic error. This indicates the ECM is receiving invalid or missing data regarding the amount of DEF remaining in the tank.