P0021 2004 Nissan Maxima -

Question

i have the codes p0021 & p1135 but i don know what ecxactly i have to change it can be the sensor but i reasently change the one on the top should i change the one on the bottom is it the same one

Answer 1

Hi there,

Both these codes indicate an issue with the intake valve timing control. Here is a list of possible causes. 

P0021 NISSAN - Intake Valve Timing Control Performance Bank 2

Read more: https://www.autocodes.com/p0021_nissan.html