2007 Kia Rondo codes for 02 sesnors

[tnt31]

2007 Kia Rondo with 2.7 V6. 145K miles.

Friend just purchased. No check engine light but we scanned it for codes. Showing 4 codes, however check engine light is off and scanner also indicates MIL off, which I think are for the 02 sensors. The codes are P2A00, P2A01, P2A03, and P2A04.

We cleared the codes and will check in a few days to see if they come back on.

Thoughts on the potential issue(s) should they return and why it would not be setting the check engine light?

 

[Rolla07]

Most likely they reset the codes before selling the vehicle and they just have yet to come back on again. Private sale?

 

[Gimpy1]

There is actually a TSB on that Kia. Here is that link:https://www.aboutautomobile.com/Technical-Service-Bulletin/2007/Kia/Rondo/Electrical-System-SoftwareAll I did was Google "dtc P2A03 for a Kia" I briefly read the he TSB and it appears to be a software issue. I believe that O2 sensors a considered part of emissins equipment and should have a warranty.

 

[spasm3]

Gimpy1 beat me to it. I think thats the avenue to go down. All those 02 sensor codes at once? ECM. Downstream sensors don't go bad that often.

http://australiancar.reviews/_pdfs/Kia_Carnival-Magentis_VQ-MG_TSB044.pdf

from above link

 

[The Critic]

Yes, update the software before replacing any parts.

$19 if you own a J2534 pass thru. Otherwise prepare to pay 1 hr labor at a dealer.

 

[tnt31]

Thanks for all of the replies. Guess if it comes back we will check with a dealer about the software upgrade.