Engine light on in 09 pontiac g6

10

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

237,365

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.

10

The troubleshooting code is P0420

1 of 1 people found this helpful.
3,835

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

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

G6

Looking for a Used G6 in your area?

CarGurus has 4,115 nationwide G6 listings starting at $699.

ZIP:

Search Pontiac G6 Questions

Pontiac G6 Experts

#1 dandyoun
dandyoun
Reputation 600
#2 Andy Huhn
Andy Huhn
Reputation 550
#3 Norm Davis
Norm Davis
Reputation 530
View All

Related Models For Sale

Used Pontiac G8
24 Great Deals out of 370 listings starting at $6,500
Used Pontiac Grand Prix
30 Great Deals out of 2,871 listings starting at $900
Used Chevrolet Malibu
950 Great Deals out of 79,654 listings starting at $1,500
Used Chevrolet Impala
521 Great Deals out of 31,725 listings starting at $1,450
Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999
Used Nissan Altima
1,033 Great Deals out of 81,564 listings starting at $1,200
Used Dodge Charger
407 Great Deals out of 28,172 listings starting at $1,988
Used Ford Fusion
1,120 Great Deals out of 83,259 listings starting at $998
Used Honda Accord
813 Great Deals out of 84,287 listings starting at $1,050
Used Chevrolet Cobalt
46 Great Deals out of 3,848 listings starting at $1,799
Used Honda Civic
656 Great Deals out of 88,603 listings starting at $995
Used Chevrolet Camaro
225 Great Deals out of 30,943 listings starting at $1,217
Used Nissan Maxima
306 Great Deals out of 25,213 listings starting at $999
Used Pontiac G5
14 Great Deals out of 493 listings starting at $1,595

Used Cars For Sale

2010 Pontiac G6 For Sale
5 Great Deals out of 248 listings starting at $1,900
2009 Pontiac G6 For Sale
17 Great Deals out of 703 listings starting at $2,500
2008 Pontiac G6 For Sale
24 Great Deals out of 1,025 listings starting at $1,988
2007 Pontiac G6 For Sale
30 Great Deals out of 1,098 listings starting at $699
2006 Pontiac G6 For Sale
7 Great Deals out of 826 listings starting at $1,900

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.