Everyone here has CEL issue with O2 sensor after the CAT
But how about CEL issue with A/F sensor before the CAT.
It looks like who has injen intake has this problem...include me.
i wonder how many ppl has this problem with injen intake.
My CEL code is P2A00

 

I didn't get a CEL with my intakes. However, B L U E S L A T E got the error but Byron told him to drive around the block a few times and it went away on its own. I'm not sure if he has HFC though

 

I haven't got a CEL either, and I've had my Injen's on since the day the released.

 

i have HFC and Injen maybe thats why
but why on the A/F sensor?
not on the o2 sensor...
My dealer did clear A/F ratio value and change the sensor that has a problem

but CEL came out again like a ghost..

 

BLUE SLATE has Fast Intention HFCs and he has no error lights

 

Yeah, usually HFC's or TP's throw CEL's.

 

i have FI HFC and Injen.
i guess he is tha lucky one

 

I have the Injens...no CEL here either.

 

do you have injen and HFC?

 

It's most likely your HFCs. Check the sensors, or the cats themselves.

 

I get CEL once in a while. However, I have Injen CAI and Fast Intention Cat-back with HFC WITH foulers for the O2 sensors.

Solution for this I found is that you first reset the ECU, and then drive your car like a maniac for about 500~1000 miles (which should bring down your MPG to about 14 with about 2~4 tank of gas). If it is still not lit up by then, it should have no problem.

If you're the type uses cruise control a lot (or light throttle to save gas), the CEL comes up very quickly after you reset the ECU.

This method has been working for me for about 10K miles... but again, it's for G35 sedan with HR motor (VQ35HR instead of VQ37HR).

 

That wasn't much of a problem for you to do though hahaha

 

Good morning to you, too, Geoff.

 

Lol.. yeah I'm about to fall asleep in class though. So tired from this weekend and I've got a long day ahead of me tomorrow

 

No HFCs.