I have a Nissan Sentra 2011. Last week my check engine light went on and the code was PO101, i had the MAF cleaned with the cleaning solution and replace my engine air filter. Drove for 50 miles and the light went off by itself. However, after another 200 miles, the light went on again with the same code. Any thoughts on what should i do at this time?
Do you have a standard paper air filter or a fabric one you need to oil? Oil types can gum up the maf over and over if recently over oiled.
Have you checked for cracks in the intake tubes?
Have you cleaned the throttle body?
Yeah, I’d go over the engine’s vacuum hoses and intake system carefully, looking for leaks.