What causes a U0233 code?

U0233 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 U0233 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with U0233 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

U0233

Lost Communication With Side Obstacle Detection Control Module Right

What it means

The right-side blind spot sensor is offline. Driver assistance alerts for right-side lane changes will not function.