Recently, my engine check light is on.
I check the code at Advance auto parts says "System too lean (bank 2)"

The guy at store says a possible vacuum host leaking.

anyone know what is wrong?

Could somebody help me out........ thanks

 

Rodents chewing through stuff under the hood? That has been a problem for several people on this site. If the buggers got the o2 sensor wire, you are looking at around $300.00 to fix and it is not covered under warranty.

 

Thank you
weird thing is the Check Engine Light go on and off many times already.
is fuel injector causing the problem?

 

I doubt that you have an injector problem. It is most likely a vacuum leak or an 02 sensor giving false info. It is not an injector because to get that code all three injectors in bank 2 would have to be clogged or malfunctioning. That is very unlikely. Do you notice the car running poorly?

 

No.....car run strong....even more strong than before....
I have aem CAI intake
do you think that is the problem? suck up too much air??
Thanks for your help

 

I would suspect the modification. Make sure it was installed correctly. It's not that it is sucking too much air, its just sucking air from the wrong place. Check all vacuum lines. Focus on the front of the engine because the three cylinder on the front of the engine are considard bank 2. The three cylinderws on the back of the engine are bank 1 .

1 2 3 bank 1

4 5 6 bank 2

 

Where the vacuum lines locate? Maybe some pitures?

Is it possible I can check myself or should I bring to dealership ?
Any warranty issue?

Thank you

 

I would try to get it covered under warranty. Take it to them and tell them that you MUST be notified if it is going to cost you anything.

 

What would it mean when the car says, service due soon B? what's the B for? any comments?
~Jason
aznpersuasion1023@hotmail.com