Guys, kinda need help on my 04 Z, recently the "service engine soon" light lamp is ON, read the Z book, thought maybe the gas cap is loose, but i was wrong, driven few miles, the light still on solid, took to the Nissan dealer, paid $125 diagnostic check the probelms, turn out i have a dead oxygen censor, dealer want $500 to fix it for 1 sensor...XD they really know how to max my credit line!!!

the nice autozone guy told me the problems also, give me some codes...

Definition:
BB Oxygen sensor heater control circuit LOW-Bank 2

BBHO2S22

probable cause

BB1.- HO2s22 Heater circuit open or shorted

BB2.- Failed Ho2s22

i noticed when i drive the car for long time, the heat start coming under the seats....the feet areas.....is this normal?

for the oxygen sensor, where is the B2 circuit located @? and can myself install it? is it hard to work with? or is it better pay insane labor fees to the dealers, let them do the work? what is the best last long oxygen sensor out there? i see many to choose from....

these questiones might sound stupid, but im noob to my car, and really need some tutorials to help.

any answers will be very helpful, thanks alot, god bless u'all

 

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Next time, just go directly to AutoZone first and get them to pull the code for you. They'll tell you exactly what code(s) and what it/they mean, including how to fix it/them. You got charged by the dealership for something that should have been free. As for replacing the O2 sensor, it's a relatively easy job that anybody who can turn a few nuts and bolts can do.

BTW, your feet area getting warmer is probably all in your head or some warm air is getting through the vents to your feet.

Most likely, your O2 sensor is damaged so I suggest you replace it. If and when you buy a new one, get the Bosch O2 sensor. They're a bit more expensive than the others, but they're supposed to be of much higher quality, meeting or exceeding OEM standards.

As for where to get it for the lowest price, check www.partstrain.com. Rather than placing your order online, check for the right part number yourself first, then place a call. Double check and triple check with the operator when placing your order so that you get the appropriate O2 sensor {upper (before cat) or lower (after cat), left (driver's) or right (passenger's)}. Additionally, that site has a price match guarantee so I suggest you search around other sites, using google (search for "car parts buy"), first. And again, this is a relatively simple job (you loosen a nut and you undo a bracket), so you should do it yourself. Just make sure you know exactly which one needs replacing when ordering and replacing.

Let me know if you need anything else. And oh, welcome to My350Z.com.

 

Always happy to help. If you have other questions please do not hesitate to waste my time.

 

Unfortunatley Autozone and Advanced can tell you what the code is for but that dosent tell you were the problems allways are.In my shop i will allways tell the customer that i can go by there diag and replace what they said was the problem....but i wont give them any gaurantie that it will fix there problem.

If you trully want to find out what some problems are you need to pay for a true diagnostic test.....i get so many people that come from those stores and replace what they said is wrong.....and it dosent fix it.I have now stopped doing any repairs done by those stores and refused to work on what he said she said and my problems with those cheap *** customers have stopped.

 

I'll give you that, but that should always be the first step. Usually, they can narrow/isolate the problem pretty well.

 

thanks alot for all you guys help, i will try the Bosch

just need to find the right person to do the works, i got the dealer diag done, and yes, it is the oxgen senor has problem.
it need the new one.

is there a book show you how to replace? or better let professional do it?

and what is the harm if i dont replace it in next few months? any damages to the car?

 

If you jack up the car and go underneath it, you should see the the oxygen sensor right there on the catalytic converters (or its replacements). The O2 sensor is color coded (green or blue, depending on which side), so you shouldn't have issues. Also, it's basically plug and play for 1 end, and the other end requires a wrench or a deep socket wrench that allows wires to come out the side of the socket itself (hard to describe and I don't know the name of it). It's just straight up replacing, so it's very easy to do (but will require some brute strength to break loose the O2 sensor).

If you don't replace it, then your car will continue to run like crap since the O2 sensor isn't providing feedback like it should. Your gas mileage will be bad, but your car will still run.