P0442 Lexus - Remedy for check engine light?

Question

2003 ES 300 Lexus check engine light on. Got codes checked . Got a new gas cap. Light still on but not blinking. Should EVAP hose be check for leak? . Just had third complete tune-up. 228,687 miles.

Answer 1

Findng an small leaks can be very difficult. If the gas cap didn't fixt the problem, then the next step is to have a repair shop check with a smoke machine for leaks.