What causes a U3462 code?

U3462 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 U3462 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with U3462 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

U3462

Manufacturer-specific network code U3462

What it means

Lost communication with a secondary body control interface. The vehicle's main computer is not receiving expected status packets from the body-related electronic modules.