What's the diagnosis friends?

[skipnrocks]

http://youtu.be/5N3u_CX6SFU

 

[skipnrocks]

New build 383 with tuned port These are my codes. But I can't seem to decipher them

 

[jugg]

12- diagnostic mode
21- throttle position sensor or circuit- voltage high
45- oxygen sensor or circuit - rich exhaust detected

 

[skipnrocks]

You are the man. Thanks. I watched it probably 15 times and kept scratching my head