Washington doesn't have an emissions test

Ended 2019-12-31.

There's nothing to pass for registration. Athena OBD still tells you why the check engine light is on, so small problems don't become big ones. Moving to a state that tests? Check that state's page.

Check your car's year

A guide, not a guarantee: stations also check things Athena OBD can't (the gas cap, paperwork), and rules change. Checked against Washington's sources in October 2026.

Drive a BMW?

Athena OBD reads the engine codes every car shares. Our sister app, AutoLingo for BMW, goes much further on a BMW: the airbags, ABS, instrument cluster and body modules too, plus service resets, even on older E-chassis cars.

See AutoLingo for BMW