The 'Check Engine' Light does not turn off?

Abraham Huerta
5

Asked by Abraham Jul 15, 2009 at 01:03 AM about the Hyundai Sonata

Question type: Maintenance & Repair

I have read every discussion on this page and thankfully my sonata runs good based on the reviews i read. the car is a well taken care of car but the check engine light stays on. it has been about 6 days and the light does not turn off. the engine and the fuse box are doing well. everything else is doing well. have had friends that work with vehicles and they say they do not know. i need an answer. my last place to go is to a dealership.

7 Answers

Mike Bonnell
6,575

No one can help until you get someone to pull the codes the computer is reading in order for it to put the check engine light on.

3 out of 3 people think this is helpful.
Joe Finis Sr.
765

Check the gas cap it is a common cause of the check engine light problem.

8 out of 8 people think this is helpful.
mikee
30

STOP using ethenol gas it causes poorer gas milage and resluts in the check engine light coming on. After two tank fulls of PURE gas ( non Ethenol ) the light went off!

3 out of 3 people think this is helpful.
Jenifer2424
40

Take it to the dealer. My 2011 elantra has been in 4 times for the check engine light. Thy replaced the o2 sensors, but the light still comes on. Hyundai corp is flyin in a tech, because they are apparently having widespread problems, primarily on the east coast. Dealer tried to tell me it was bad gas in the region, but I think that's a load of doodoo. Take it in.. Emissions system is warranted for 8 urs 80,000 miles!

4 out of 4 people think this is helpful.
Andrew Olsen
5,995

Just have the codes read at autizone or something. The check engine light neans the computer thinks something is wrong. About 50% of codes do not create a driveability issue but is emissions control related.

5 out of 5 people think this is helpful.
Andrew Webster
20

FYI, I had the same problem (Sonata 2009) and had a dealer check it. They pulled the code, told me it was an evaporative system problem, and asked about refueling and the fuel cap. They reassured me, as I was in the middle of a nearly 3000 mile drive, that it wasn't critical. So, here's the thing. We were at around 6000 feet above sea level, in New Mexico. When we got to the Bay Area in San Francisco a few days later, guess what - the light went out on its own. Which suggests to me that it was to do with altitude and the changes in atmospheric pressure, and actually nothing was wrong at all.

2 out of 2 people think this is helpful.
Appiusforum
10

I have a 2005 Sonata and have had issues over the years with the Check Engine light. Every time it was an evaporation leak and I got blamed on the gas cap. Recently it comes on more often and I changed the gas cap which did not solve the problem. The dealer is suggesting the Purge Valve replacement. Any thoughts on the forum?

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Sonata
Looking for a Used Sonata in your area?
CarGurus has 50,018 nationwide Sonata listings starting at $1,600.
ZIP:

Search Hyundai Sonata Questions

Hyundai Sonata Experts

#1 Tom Demyan
Tom Demyan
Reputation 510
#2 James Warner
James Warner
Reputation 490
#3 Joe Finis Sr.
Joe Finis Sr.
Reputation 350
View All

Related Models For Sale

Used Honda Accord"
1,444 Great Deals out of 66,644 listings starting at $995
Used Hyundai Elantra"
816 Great Deals out of 45,112 listings starting at $1,495
Used Kia Optima"
574 Great Deals out of 37,391 listings starting at $1,900
Used Toyota Camry"
2,018 Great Deals out of 75,811 listings starting at $1,007
Used Nissan Altima"
1,995 Great Deals out of 73,042 listings starting at $1,000
Used Honda Civic"
922 Great Deals out of 49,340 listings starting at $1,600
Used Ford Fusion"
1,979 Great Deals out of 68,320 listings starting at $3,450
Used Hyundai Santa Fe"
546 Great Deals out of 23,385 listings starting at $2,000
Used Chevrolet Malibu"
1,718 Great Deals out of 64,609 listings starting at $1,200
Used Nissan Maxima"
691 Great Deals out of 19,329 listings starting at $946
Used Hyundai Sonata Hybrid"
74 Great Deals out of 5,508 listings starting at $13,180
Used Mazda MAZDA6"
279 Great Deals out of 12,110 listings starting at $2,495
Used Hyundai Genesis"
138 Great Deals out of 7,302 listings starting at $10,900
Used Toyota Corolla"
1,422 Great Deals out of 47,416 listings starting at $1,488
Used Hyundai Azera"
77 Great Deals out of 3,424 listings starting at $3,595