What causes a U0512 code?

U0512 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 U0512 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with U0512 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

U0512

Network/CAN bus communication code U0512

What it means

Invalid data received from the Seat Control Module A. This indicates the central gateway is receiving unreadable or corrupted messages from the driver's seat controller.