What causes a SPN 3241 code?

SPN 3241 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 3241 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3241 active.

How do I fix SPN 3241?

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 3241

Exhaust Gas Temperature Bank 1 Sensor 1

What it means

Indicates the Exhaust Gas Temperature (EGT) sensor located at the inlet of the Diesel Particulate Filter (DPF) or the turbocharger outlet is reporting data out of range or an electrical circuit fault.