I have a 2000 Celica GT-S with a good number of miles on it, and about a month ago my CEL came on. Car was running completely fine, I was doing about 90 on I-75. Ran the codes at Autozone, came back as P0171 Bank 1 System 2 Lean. I was told this wasn't an issue and would just make my mpg worse and should run without issue, but that stupid CEL light is driving me crazy.
I keep seeing that the easiest solution is to clean my MAF sensor? My friend is replacing my Air Filter
(as well as my cabin filter which is missing!) and apparently that's the best time to do it, but I've read that it's really easy and costly to mess up you MAF filter. Should I just leave it or..? I don't really know much about cars and I really don't want to mess anything up.
I read the guide on how to clean it, I'm just wondering if it's worth it.