hummer h3 3.7 P0121 error code

[whitesmoke]

Installed a ported throttle body on my 2008 Hummer H3 3.7L and its throwing out a p0121 error code. any help on this code?

 

[alrock]

Moved to the H3 section. I would double check the wiring harness and make sure no pins are bent, pulled out, damaged, etc.

 

[Happy Hummer]

I'm guessing you need a TB relearn procedure. Look it up on the web.
Chris

 

[chaos254]

Did you pull the correct fuse when you installed it?

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[whitesmoke]

Pulled out the PCM-B fuse before installation and at first no check engine light and all of a sudden it appeared.

 

[whitesmoke]

I'm guessing you need a TB relearn procedure. Look it up on the web.
Chris[/QUOTE
How do you do that because I already removed the negative battery terminal and PCM-B Fuse before even installation and check engine all of a sudden turns on. After installation and check engine did the following procedure and cleaned out throttle body and check engine light disappears and all of a sudden still comes back. Mechanic recommended to replace MAP sensor ????

 

[whitesmoke]

I had thought about getting the H3 Tuned and maybe that would solve the problem....$250 I figure is not that bad.

 

[chaos254]

Did you get it from super modulation on 355nation? Might want to run it by him

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[Happy Hummer]

Here is a video of some stuff to do with relearn. Not sure if this will help.

http://m.youtube.com/watch?v=8JAQjEip9tk

chris