What causes a U3179 code?

U3179 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 U3179 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with U3179 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

U3179

Manufacturer-specific network code U3179

What it means

Lost communication with the Driver Door Module (DDM). This specific code focuses on the primary door controller node.

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

Log in Sign up free