Engine light on in 09 pontiac g6

20

Asked by Sep 23, 2013 at 07:32 PM about the 2009 Pontiac G6

Question type: Maintenance & Repair

I have a 2009 Pontiac G6 (4 cylinder) that has the engine light turned on. I went to an auto parts store and they told me the catalyst efficiency had a low bank because the o2 sensors monitor the catalytic converters ability to store oxygen and the possible causes were the catalytic converter was defective due to engine misfire or running condition, there's a large vacuum leak, or the engine oil leakage into exhaust-valve guide seals, piston rings. I have no idea what any of it means, if anyone could guide me in the right direction, I would really appreciate it. Thanks.

3 Answers

250,815

Having the 4 digit code would better help us. The tech is partly right, but having the code will tell us which O2 sensor is detecting the problem. Do you have a misfire? The codes would tell us which coil was the problem and if you have a vacuum leak as well. Post the code or codes and we'll get back to you.

20

The troubleshooting code is P0420

2 of 2 people found this helpful.
4,015

ritzy24, If you are still having concerns and would like for your GM dealership to look into this further, please let us know. You can email us at socialmedia@gm.com. Erica Tiffany GM Customer Care

2 of 2 people found this helpful.

Your Answer

G6

Looking for a Used G6 in your area?

CarGurus has 3,898 nationwide G6 listings starting at $1,800.

ZIP:

Pontiac G6 Experts

  • #1
    dandyoun
    Reputation
    620
  • #2
    Norm Davis
    Reputation
    590
  • #3
    Andy Huhn
    Reputation
    550
View All

Related Models For Sale

Used Pontiac G8
15 Great Deals out of 351 listings starting at $4,900
Used Pontiac Grand Prix
35 Great Deals out of 2,730 listings starting at $1,200
Used Chevrolet Malibu
1,232 Great Deals out of 78,092 listings starting at $1,500
Used Chevrolet Impala
591 Great Deals out of 34,660 listings starting at $1,000
Used Honda Accord
1,023 Great Deals out of 62,742 listings starting at $999
Used Ford Mustang
761 Great Deals out of 42,755 listings starting at $1,300
Used Pontiac G5
8 Great Deals out of 450 listings starting at $2,100
Used Nissan Altima
1,152 Great Deals out of 74,938 listings starting at $999
Used Ford Fusion
1,112 Great Deals out of 76,679 listings starting at $1,299
Used Dodge Charger
472 Great Deals out of 27,625 listings starting at $1,650
Used Chevrolet Cobalt
49 Great Deals out of 3,686 listings starting at $1,800
Used Chevrolet Camaro
422 Great Deals out of 31,785 listings starting at $2,395
Used Honda Civic
833 Great Deals out of 78,398 listings starting at $900
Used Toyota Camry
1,082 Great Deals out of 72,629 listings starting at $990

Used Cars For Sale

2010 Pontiac G6 For Sale
3 Great Deals out of 212 listings starting at $3,499
2009 Pontiac G6 For Sale
21 Great Deals out of 683 listings starting at $1,900
2008 Pontiac G6 For Sale
22 Great Deals out of 959 listings starting at $1,800
2007 Pontiac G6 For Sale
21 Great Deals out of 1,031 listings starting at $1,995
2006 Pontiac G6 For Sale
12 Great Deals out of 776 listings starting at $2,100

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.