Check engine light air valve issue

I had a similar issue with my UX. Check the hose connection from the pump to the valve. Mine was cracked and causing all sorts of idle problems. Is your idle rough? It could also be related to vacuum hoses, the throttle body, or even manifold pressure.

Thanks for the tip! Yeah, the idle is definitely a bit rough sometimes. Where exactly is that hose located? Is it easy to get to, or am I going to need special tools?

It's a bit tricky to get to without lifting the car, but the hose runs from the air pump, near the front of the engine, to the air valve. Honestly, based on your description, I'd recommend taking it to a workshop. They can diagnose it properly and replace the hose. Cost me around 175€ last time.

Okay, I think I'll do that. Sounds like it's more involved than I thought. Thanks so much for the advice! Turns out it was exactly what you said – a cracked hose. New hose, light's gone, and she's running smooth. You saved me a ton of guesswork!