my xtrail is a 2009 an codep1122 always show up while driving, even when cleared by my mechanic.

Question

engine check light always comes on when i alight a boat over seas

Answer 1

for p1122 and p0120 which is a throttle body code you can clean the throttle body and do idle air volume learning procedure

might be the same steps as an xterra

http://nissanhelp.com/diy/xterra/projects/nissan_xterra_idle_air_volume_learning.php

 

p0100 is for mass air flow sensor you can try to clean the mass air flow sensor