I have an Infiniti G35, the vehicle will not start and I have the engine code P1238

Question

Hello sir
I have an Infiniti G35, the vehicle will not start and I have the engine code P1238

Answer 1

Start by cleaning the throttle body and doing idle air relearn 

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

Possible causes

• Faulty Electric Throttle Control Actuator
• Throttle plate sticking due to carbon build-up
• Electric Throttle Control Actuator harness is open or shorted
• Electric Throttle Control Actuator poor electrical circuit connection

https://www.autocodes.com/p1238_infiniti.html