Looking at advance auto Denso Replacement parts. Is the the correct one for the Bank 1? Thanks
http://shop.advanceautoparts.com/web...x_x#fragment-2

or
http://shop.advanceautoparts.com/web...1740540576____

 

thats showing the downstream sensor--or `after cat`

bank 1 iirc is the front sensor= thats the one reading the engine performance
the rear sensor reads the cats performance

whats your fault code and running symptoms--drop in mpg?

 

Same P1041 error for bad sensor everyone get. Just wanted to know which sensor to get. Its the one after the header but advance auto doesnt said which one is which.

 

Bank1 should be the front sensor, that has the green wire on the oem sensor. if your sensor was bad, your engine will idle shakenly.

 

there is 1 before cat,,,thats the one you want
and other is located after cat and makes sure the cat is working correctly

did you mean cat when you said header? in post 3
any good parts person knows the front O2 does all the work of running the car and is most likely to fail

except if you race the car and beat the cat,,,

 

There needs to be more info. With our motor and its exhaust setup there is only 1 bank to monitor but 2 sensors. A correct code would read bank 1 sensor 1 or 2 meaning front or rear.

 

Im thinking its Bank 1 Sensor 2 will check tomorrow. ran thur a puddle water and Check engine light came on. Thinking it the one before the cat.

 

in that case do an ecu reset and see if it was a false code from the water - and not a bad O2
Is the car running different, mileage drop? hard to start,,,O2 sensor

 

I cleared the code and its came right back on. Car idle a little different, Which one of the link i posted above would be the one i need? Thanks

 

Denso #234-4727 = Bank 1 (upstream)
Denso #234-4621 = Bank 2 (downstream)

IMHO, if the car has over 100K, then replace them both while you are under there. Amazon (with free shipping) beats Advanced Auto even with the 15% Advanced gives you on an over $100 purchase. If you need it immediately, then the local retail price reflects the opportunity cost.

Good luck

 

Until you give us the exact code we would be just guessing.

 

Im gonna go ahead and get them both since my car is at 109k. $70 for both sound like a deal to me. Thanks all

 

wow, for real denso plug and play parts! thats an outstanding price

 

Come out about $83 with tax.


Denso #234-4727 $79.99 ($30 off at Advance code BIG30)http://shop.advanceautoparts.com/web...996-_-10711125

Denso #234-4621 $51.99 ($20 off at Advance with code SJ20 )
http://shop.advanceautoparts.com/web...996-_-10711125

 

Amazon has them for:
#234-4727 = $51.19
#234-4621 = $30.28
with free supersaver shipping; however, I like the ability of Advanceds option of shopping on-line and then being able to pick-up the part locally, should they have it in stock vs waiting 5-7 days for supersaver shipping.

Great deal

 

Ordering both from rockauto soon.
DENSO Part # 2344096 - Front - $34.89
DENSO Part # 2344621 - Rear -$26.79
Shipping - $3.36

Total - $65.04

 

Does Denso make the back oxygen sensor?