What causes a U0755 code?

U0755 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 U0755 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with U0755 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

Log in Sign up

OBD-II

U0755

Network/CAN bus communication code U0755

What it means

Lost communication with the Front Camera Module. Affects Lane Keep Assist and Forward Collision Warning.

Sign in to view symptoms, probable causes, diagnostic steps, severity, and related codes

Log in Sign up free