What causes a U3441 code?

U3441 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 U3441 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with U3441 active.

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

OBD-II

U3441

Manufacturer-specific network code U3441

What it means

Manufacturer-specific code indicating the Chassis Control Module is unable to broadcast its status to the instrument cluster or engine controller.