Question

I have the engine codes P2135, P1759, and P1815 on my 2004 Infiniti G35 Coupe. How can I fix these codes?

Answer 1

https://www.autocodes.com/p2135_2004_infiniti_g35.html

Try to clean the throttle body and do an idle air relearn.

http://infinitihelp.com/diy/gcoupe/projects/infiniti_g_idle_air_volume_learning.php

https://www.autocodes.com/p1759_2004_infiniti_g35.html

I would replace the transmission fluid first, if the transmission is shifter hard I think the transmission may have to be replaced.

https://www.autocodes.com/p1815_2004_infiniti_g35.html

I think the shifter may need to be realigned if that does not fix it the assembly may have to be replaced.