What causes a U0586 code?

U0586 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 U0586 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with U0586 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

U0586

Network/CAN bus communication code U0586

What it means

Invalid data received from the NOx Sensor 'A'. This occurs when the sensor reports data that is outside of expected parameters or contains communication errors.