What causes a U0782 code?

U0782 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 U0782 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with U0782 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

U0782

Network/CAN bus communication code U0782

What it means

Lost communication with the Mirror Control Module. Handles power folding, dimming, and signal functions in mirrors.

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

Log in Sign up free