XC90 Lean Running Condition

I had something similar on my XC90. Have you checked your spark plugs and the oxygen sensor? A bad 02 sensor can mess with the air-fuel ratio, leading to a lean condition. How's your fuel economy been lately?

Thanks! I haven't checked the O2 sensor yet, but the spark plugs were replaced recently. Fuel economy has definitely taken a hit. Was it the O2 sensor in your case, or something else?

Mine ended up being fuel injectors. I didn't diagnose it myself, honestly. Just took it to a shop after eliminating a few simpler possibilities. Rough running and poor fuel economy were the giveaways. I'd suggest getting it checked out by a professional soon.

Appreciate the insight! Turns out it was indeed a faulty fuel injector. Cost me 515€ to get it sorted. Thanks for pointing me in the right direction!