Hey

My service engine light turned on today so i took it to a local autozone and checked what the problem was. The machine read that i have a problem in Bank 1 Sensor 2 - P0138. So, i went to the guy and he checked the prices for me. He told me that the sensor was 114.99. However, he also showed me that i will HAVE TO buy two sensors and not one. So my total came out to 250 dollars!!! I wanted to know why did i have to buy two?? was he just trying to rip me off????

Please let me know

Thank you

 

If he can give you a good reason that you need to buy 2 sensors, I'll buy them for you. on needing 2 sensors. The code that was pulled only represents 1 sensor.

Check out the new O2 sensor thread, it will help you greatly.

http://forums.maxima.org/showthread.php?t=558734

Also, remember to call Dave Burnette (888-254-6060) and see if he can get you a better price.

 

dave has the sensor for around 90 if i remember correctly

 

NTB02-05aa

There is a TSB about the P-0138, 0139, 0140, 1147, 0158, 0159, 0160, 1167 that says if you get any of those codes, you need to replace both Bank 1 and 2 rear O2s and have the ECU reprogrammed...and the reprograming is dependent on the MAF you have.

The TSB is from 2003, so it could be that any servicing at the dealer done from that date might include the ECU reflash. Or maybe not.

I had the P0139/1147 codes, reset the SES and it was back on in 10-12 miles. Changed the rear O2 bank 1 sensor (the white one) and 50 miles later, the light is still out. If it comes on again with the P0158-0160/1167, then I'll need the other O2 and a reflash, I guess.

 

Thanks for the replies. The reason that he told me to buy two was because the computer showed it that if you buy one, you have to buy the other. I do not know why, but thats what he said. He showed it to me as well.

 

Well, his computer is wrong.

 

you might be right. Maybe it has to do with the fact that when the machine "read" my error, it said 1 of 2 and 2 of 2. However, both errors displayed the same thing.

 

Hmm, I am wrong. Looks like HSO2 B1 & B2

 

the TSB recommends you replace both...most people on here only replace the one with no problems

 

Actually, it isn't, according to the TSB I have sitting on my desk.

I was told and shown the same thing. It was recommended though, that I replace the one the code showed faulty and see if the code for the other one shows up. I have 123,800 miles on my car, so it is possible both were already replaced per the TSB and now I am in the clear to replace only the one that corresponds to the code.

 

dont replace the other until it goes bad....

 

When I had the P0139 and P1147 a couple of years ago, I only replaced the one sensor and have not had a problem since.

I would bet that the TSB tells you to replace both because both have proven to be faulty, so they figure that rather than fix one and then have the other fail 2 weeks later so that the customer has to return (and is not happy about it), they'll just fix both now and preempt the eventual failure of the other one.

 

Last June pulled the P0139 and P1147 codes on my 02 Max. After getting tired of resetting the SES light for the same problem, four times over the next two months, changed only the one O2 sensor.. Bank 1, Sensor 2 (White). Easy replacement. Didn't bother with the ECU reflash.

No problems or SES light since.

 

 

Well crap, my SES came back after 160 miles of driving after replacing the bank 1 sensor 1, still 0139/1147. Cleared the code but if it comes back, I guess I need to replace the other one and get my car to the stealership for a reflash.

 

Isn't 0139 Bank 1 sensor 2? I'm kicking the 0138/0139 combo myself now

 

quick question. is reprogramming the ecu the same as wiping the codes from the computer?

 

no...thats resetting

 

To the OP I believe this is what you need to do to reprogram.

[QUOTE=Scottwax;6346861 Cleared the code but if it comes back, I guess I need to replace the other one and get my car to the stealership for a reflash. [/QUOTE]

 

After resetting my SES light (which popped 160 or so miles after replacing the O2), it has been off and stayed off for more than 1000 miles now. Go figure.

 

Your lucky both of mine went out on me , and im doing the Nmexmax 02s for now .

But I was telling DJ2Max (which i thought was the OP) that he needs to reflash(like you mention) after fixing those codes not clearing them by resetting (which sooner explain).

 

so to be clear, the ecu reset procedure only clears the codes. Reflash requires an ODBII and a nissan tech?

 

reset - puts ECU back to factory settings (rolling back drivers)
reflash - new settings (updated drivers)

 

if you're doing this yourself then i would suggest replace the o2 sensor that the code is showing and reset the computer. if everything is well, thats good. if car hesitates/misfires/or act strange abnormal, bring it to the dealership for a reflash.

I have done many o2 sensors without the need for a reflash.

 

yeah im considering bringing my car in to the dealer to reflash because I'm still pulling a p0507 code even after changing the o2 sensor and reseting the computer.