service engine light

I hope this is the right place for this. I have a 2000 Park Avenue Ultra. 121,000 miles. Well cared for all its life. However, the service engine light came on a few months ago and it’s showing a PO 171–left bank 1 too lean. I have taken my car to two Buick dealers and five independent...

Hello! completely new to this forum, hope I'm posting in the correct place. About 6 months ago I bought a 2015 Buick Regal AWD turbo. It now has about 40,000 miles on it. (Disclaimer I will be going to the dealership this weekend). I'm wondering if anyone has had the "Service All Wheel Drive"...

I've been having trouble with my 2001 century buick, to figure out why those lights turn on after I move the car, sometimes they turn off, but sometimes it stays all day, my emission line just broke as well does this have anything to do with or are these two separate problems, I want to fix it...

I have 1994 roadmaster estate and 2 days ago the service engine soon light came on but doesnt stay on and comes on and off while driving anyone have any ideas on what's going on? Usually comes on after driving for a bit and going 0-60 really fast but not always.

Trying to diagnose a new issue with my 2001 PA, 120K miles, always maintained. Recently replaced fuel filter, after which car seemed to run just fine. Now a problem which may or may not be related. At about 45mph "Service Engine Soon" light starts flashing with 3 beeps. No obvious mechanical...

My service engine light came on, and the error code indicates a MAF sensor problem. I've cleaned the MAF sensor (1 year old). The service engine light is still on. Question: Assuming the MAF sensor problem is fixed, will the service engine light go out automatically after driving the car a...