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Discussion Starter · #1 ·
Hello I was having problems with the rpm being above 1000x I got it checked and the sensor connected to the throttle body was bad, I replaced the throttle body and the idle is normal and it revs good, but now I have 4 codes, p1122, p0123, p0223 i forgot the last code... Is there something I need to do or do I just erase the codes???
 

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You can try to erase the code and do all of the relearn procedures. If nothing works you will have to swap out the throttle body. When I had throttle body issues I recall having similar codes and they only went away after I swapped for a different throttle body. If it turns out that you do need a tb then you have a few vehicles to choose from at the junkyard ( 2003- 2008 Infiniti Fx35 & M35 / 2003-2006 G35 & 350z / 2002 - 2004 I35 / 2003-2009 Murano / 2004-2009 Quest / 2002- 2008 Maxima). I am currently running one off of a quest with no issues. gl
 

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^^ good question, also I assumed that the op had a v6 but if it's not then forget everything I said :).
Most of what you said is still right, but applies to the QR25DE motors. Sentra, Rogue, etc. use the same motor, so you could look for those, too. Here's a link to the QR info.
 

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Discussion Starter · #6 ·
I did the idle relearn procedure and erased the codes, for now it's good... But now I have 2 codes for "knock sensor bank 1 lean" any ideas??? I just got the knock sensor replaced...
 
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