I stopped worrying about it..

 

*CEL 3times within a month after change my intake(injen) and HFC(FI).

Today i went to dealer and got the code

code number:P2A00 : A/F sensor1 (B1) 1time and

B2127 : parking brake 39times

Steve(infiniti mechani) told me that when you have a A/F sensor code
it is not relate to the exhaust(include HFC).
It is happened b/c of intake...

anyhow he cleared all code for me

 

jungwoo, you'll most likely get the SES again after a drive cycle. P2A00 and P2A03 are the codes thrown for the o2 sensors in the headers. P2A00 is drivers side, and 03 is passengers. They are thrown by the HFC's, not the intakes. I had the codes when my HFC's were installed, and I didn't have any intake on the car, which proves my point. The intakes play a role in the SES simply because they also increase flow, but adding an intake alone will never trip your SES. Your mechanic was wrong. The reason you will most likely get the code again is because a simple clearing of the codes does not change the learned A/F ratio values your car has. You car has a set parameter for what the A/F ratio should be, and adding HFC's and intake change the A/F ratio reading. You need to reset the learned A/F ratio values in order to allow the car not to trip the SES light again, clearing codes doesn't do this. GL with this, and I hope your SES light stays off, like mine finally did

 

Reset ECU by reconnect the battery.

 

earth0, that a very temporary and rookie move. That doesn't clear anything, not even the code that first tripped the light. All that does is temporarily turns the light off. You need to clear the code completely, or for a permanent fix, reset the A/F ratio values like I said above.

 

I have JWTs, HFCs and Full Catback and I havent had a CEL.... *knock on wood*

 

Well, I know most of you already know baout it, but just in case, I just found this today on Ebay, CEL Fix Kit. Maybe somebody with the CEL issue can try it.

 

You guys will need some non-foulers.

 

Before anyone spends a dime, try the A/F ratio learned value clear. It worked for me, and Infiniti told be it was the problem. I guess if that works, then try the ebay kit. The clearing of the learned A/F ratio values is free though

 

^^If your dealership will do it for you. Not all are mod friendly.

 

If you r near los angeles area

I know a infiniti tech guy .

He did oil change, alignment(tanabe spring),and clear that A/F ratio value at

$1XX.XX

just PM me...

BTW AZg37

thank you!