My check engine light came on after I didn't turn key all the way over starting it. Started second time and runs great still

Asked by Oct 12, 2017 at 02:36 PM about the 2012 Hyundai Tucson

Question type: Maintenance & Repair

Is it possible that a sensor/light was triggered when I didn't turn key all the way
over?  Was told that is what happened last time light came on

6 Answers

Anyone else experience this?


The dash lights come on when key is turned and car has not been started, if check light continues to stay on go have the code scanned.


If you turn the key and all the lights come on the dash, and the vehicle isn't started, those are start up lights. This is normal. If any lights stay on while your vehicle is actually put in the on crank position and they do not shut off, then there is an issue. Check your oil if the light stayed on when the car first started and faded, but only if the key was cranked, not the start up lights. Meaning, turn your car on, if the light stays on after the key is cranked to on, there may be an issue. If the light only comes on when the key is in the on position but not cranked, there shouldn't be any issues with warning lights. Check out this website for more explanation.

Short answer, just luck or maybe the right solution. My granddaughter brought her 2006 Hyundai Tucson over and said her check engine light was on. I had heard about recalls for problems with gas caps so I tried that. No luck. She needed gas so I took it to fill it up. When I activated the pump and inserted the nozzle I tried to set the latch to hold the handle open. It clicked off like it was full. I tried a couple more times, but had to manually hold the nozzle open to slowly try to fill it. Finally it occurred to me that it may be a vapor recovery problem. I removed the nozzle and rocked the car a few times to see if had fuel blocking any of the vapor lines (topping off can cause this problem). After rocking the car, I was able to engage the hold open latch on the nozzle and it flowed with ease. When the fuel filled it clicked off and I was careful not to top it off. As I left the pump island, voila!! The check engine light was off and stayed off. I don't know if this will remedy all problems, but it's worth a try. No repairs, no mechanics, just common sense. Vapor recovery systems are temperamental.


If this happened then you need to check purge valve and or charcoal canister (EVAP SYSTEM), canister likely has been flooded with fuel either by faulty purge or too much fuel in tank when filling up and filling the vent lines with raw fuel.


There is no real cure with the Fonzy nudge, bump or a snap of fingers. Glad it worked for you though.

Your Answer:


Looking for a Used Tucson in your area?

CarGurus has 27,356 nationwide Tucson listings starting at $1,300.


Hyundai Tucson Experts

  • #1
    Michael Kane
  • #2
  • #3
View All

Related Models For Sale

Used Hyundai Santa Fe
263 Great Deals out of 25,147 listings starting at $1,200
Used Honda CR-V
993 Great Deals out of 65,073 listings starting at $900
Used Hyundai Santa Fe Sport
263 Great Deals out of 13,967 listings starting at $8,232
Used Toyota RAV4
713 Great Deals out of 62,080 listings starting at $1,495
Used Kia Sportage
208 Great Deals out of 22,240 listings starting at $1,499
Used Nissan Rogue
744 Great Deals out of 75,911 listings starting at $1,708
Used Mazda CX-5
289 Great Deals out of 27,270 listings starting at $6,700
Used Ford Escape
1,175 Great Deals out of 85,355 listings starting at $800
Used Kia Sorento
447 Great Deals out of 37,328 listings starting at $996
Used Hyundai Sonata
536 Great Deals out of 47,699 listings starting at $950
Used Chevrolet Equinox
1,349 Great Deals out of 84,810 listings starting at $997
Used Hyundai Elantra
403 Great Deals out of 43,462 listings starting at $1,400
Used Toyota Camry
865 Great Deals out of 67,937 listings starting at $1,350
Used Nissan Murano
376 Great Deals out of 23,700 listings starting at $2,150
Used Ford Edge
928 Great Deals out of 55,486 listings starting at $2,000

Used Cars for Sale

2018 Hyundai Tucson For Sale
15 Great Deals out of 20,204 listings starting at $15,775
2017 Hyundai Tucson For Sale
58 Great Deals out of 2,051 listings starting at $12,499
2016 Hyundai Tucson For Sale
41 Great Deals out of 1,495 listings starting at $11,887
2015 Hyundai Tucson For Sale
36 Great Deals out of 960 listings starting at $8,993

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.