P0139 code on Hyundai V6 Sonata?

Asked by chatson12 Dec 12, 2020 at 08:55 AM about the 2009 Hyundai Sonata V6 Limited FWD

Question type: Maintenance & Repair

There were 2 Error code  P0139 & P0137 code  on my Sonata 2009 V6. I got it
changed  by car mechanic a Downstream O2 sensor, reset the code ,Now i'm
seeing error code  P0139 again showing .Pl advise?

4 Answers


Now you have to inspect wiring and scan tool data to find if ithe o2 sensor is working correctly.

Thanks let me take it to mechanic who changed the O2 sensor to inspect the wiring & scan tool data ,tell me one thin how many O2 downstream sensors are there ? My mechanic said with one sensor hopefully both the error code P0139 & 0137 will go whereas when i google it mention there are 2 O2 downstream sensors. Pl advise accordingly?


It depends on the system. V6 and V8s usually have 4 o2 sensors all together and 4 cylinders usually have 2 sensors. Bank 1, Sensor 2 is the one your code is correlating with. Which Sensor 2 is behind the catalytic converter often called a downstream. Bank 1 is off whatever side of the cylinder head cylinder 1 is on.

Your Answer:


Looking for a Used Sonata in your area?

CarGurus has 15,439 nationwide Sonata listings starting at $995.


Own this car?

Share your experience with others.

2009 Hyundai Sonata

Review another car

CarGurus Experts

  • #1
  • #2
  • #3
View All

Know more, shop wisely


Related Models For Sale

Used Kia Optima
466 Great Deals out of 6,878 listings starting at $1,950
Used Toyota Camry
1,837 Great Deals out of 34,783 listings starting at $889
Used Honda Accord
1,484 Great Deals out of 27,622 listings starting at $995

Used Cars for Sale

2023 Hyundai Sonata For Sale
68 Great Deals out of 4,132 listings starting at $20,400
2022 Hyundai Sonata For Sale
55 Great Deals out of 730 listings starting at $17,298
2021 Hyundai Sonata For Sale
115 Great Deals out of 1,777 listings starting at $13,414
2020 Hyundai Sonata For Sale
111 Great Deals out of 1,493 listings starting at $13,800
2019 Hyundai Sonata For Sale
98 Great Deals out of 1,001 listings starting at $6,233

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.