What causes po441?
What Are Some Causes of a P0441 Code? There are several things that can trigger error code P0441. The main cause is a faulty purge valve. Other common causes include a disconnected or clogged purge line, circuit issues like loose connections or damaged wires, or problems with the control module.
Will P0441 clear itself?
Usually takes about a week for it to reset on it’s own, which is basically what it took for you.