What causes a U0986 code?

U0986 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 U0986 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with U0986 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

U0986

Network/CAN bus communication code U0986

What it means

Invalid data received from the Tire Pressure Monitor System (TPMS) control module. The vehicle gateway is receiving data packets that do not match the expected protocol or checksum.