Code P0507, where is the idle sensor valve located?

Hi,

The code indicates the idle speed is slightly higher than expected. I'm not familiar with what you referred to. The idle speed is adjusted by a TAC (throttle actuator control motor). This motor is controlled by the PCM.

I attached the relearn procedures below for the idle speed. However, before you do this, try cleaning the throttle body. Something may be preventing the throttle plate from fully closing. Here is a link for that. Note, anything that causes the idle speed to be slightly too high can set the code you have.

https://www.2carpros.com/articles/throttle-actuator-service

Also, confirm there are no engine vacuum leaks.

Here is a link that explains how to check and repair:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Let me know if this takes care of the issue.

Take care,

Joe

See pics below. Note: The relearn procedure will require the use of a bi-directional scan tool.