my sentra gave me a code of p2101 but that isnt on the list

Question

i also got codes p0113 and p0102 both of which are on the list but the first code that came up was p2101 anyone know what that one means

Answer 1

p2101 is a valid code for the 2006 Sentra, start by clean the mass air flow sensor with mass air flow sensor cleaners and clean the throttle body. 

you will have to do the idle air volume learn after cleaning, see link below 

http://nissanhelp.com/diy/sentra/projects/nissan_sentra_idle_air_volume_learning.php