Check engine light

[drjay9051]

My 2009 Genesis sedan has 30K miles. The check engine light just came on. Per the manual it is likely an "emissions" issue.

Dealer is a looong drive. Would this type of thing fall under warranty or not? if not local car guy is 2 miles away. if so it may be worth the 75 minute drive to dealer.

Thanks

 

[jtbishop]

Make sure that your gas cap is on tightly. This was a common cause of the check engine light when the car first came out.

Just turn it a few times until you hear a couple of clicks. and then see if the light goes out.

 

[Rey]

Sometimes, a check engine light represents a brief transitory lean/rich condition that does not reoccur. In such event, the light will switch off by itself after an unspecified number of engine starts.

Checking gas cap is always a good idea.

One thing I do is to "reboot" the car's ECU; and if the check engine light comes on again, then I consider this to be a problem which has to be addressed. Many auto stores, like Autozone, have code readers you can use to refine your diagnosis. But Hyundai's codes may not be revealed/interpreted by many code readers, requiring you to drive the long distance to the dealer.

Rebooting is very simple. There are two basic ways to do this. The easiest is to disconnect the batter negative cable at the battery and allow the car to sit for about 24 hrs. It probably will reboot in less time, but it will for sure in 24 hrs.

The second method I use is to disconnect both positive and negative cables; and then connecting these cables together for at least 15 minutes. This is just a bit more complicated as the cables are too short to connect together. For this I use a simple everyday wire to "jump" between the cables.

What rebooting does is to discharge some, but not all, of the ECU's memory capacitors. Then on restart the ECU "sees" the motor as a new installation and begins to "learn" the motor, which all ECU's are programmed to do.

 

[WalterM]

My 4.6 had the check engine light come on when it had about 9,000 miles. The dealership replaced an Air Flow Sensor which had to be ordered. The repair was covered under warranty.

 

[Cut-Throat]

My 2009 Genesis sedan has 30K miles. The check engine light just came on. Per the manual it is likely an "emissions" issue.

Dealer is a looong drive. Would this type of thing fall under warranty or not? if not local car guy is 2 miles away. if so it may be worth the 75 minute drive to dealer.

Thanks

Yes, it should be under warranty.

 

[tmcglasson]

About 6,000 miles ago, I had a new engine and computer installed in my 2011 Genesis sedan. I also had it serviced three days ago - oil change, etc. My check engine light came on. I have relighted the gas cap but still on. Any ideas what might be wrong? Do you think Auto Zone can tell me what the code is?

 

[NSXNEXT]

Do you think Auto Zone can tell me what the code is?

Of course. Find out the code before you take it to a dealer.

And invest $30 in your own OBDII scanner. Best money you can spend. If it's a gas cap you can reset it yourself with the scanner.

 

[EdP]

About 6,000 miles ago, I had a new engine and computer installed in my 2011 Genesis sedan. I also had it serviced three days ago - oil change, etc. My check engine light came on. I have relighted the gas cap but still on. Any ideas what might be wrong? Do you think Auto Zone can tell me what the code is?

If it is the gas cap, it has to go through some drive cycles to shut off.
I'd certainly try Auto Zone for free before a $100+ diagnostic fee at a dealer.

 

[NSXNEXT]

If it is the gas cap, it has to go through some drive cycles to shut off.
I'd certainly try Auto Zone for free before a $100+ diagnostic fee at a dealer.

If you don't have a scanner and it's the gas cap ask AutoZone to reset the CEL for you.

 

[G-178944]

I have a 2010 Hyundai Genesis 2.0T engine light that came on code P0068 MAP/MAF Correlation. is it because I have a aftermarket air intake and need to put the OEM air box back in with the MAF sensor or maybe one of my sensors went bad that just needs replacing like MAP or BOOST sensor...??

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[Gunkk]

Aftermarket intakes are almost always bad news, IMO.

How to fix:
1. Check the connections.
2. Put it back to stock.
3. Check the connections again.
4. Fire the parts cannon at it.

 

[nudnik]

Greetings. I am a member of the forum. I queried about the check engine light which had turned on in my Genesis 2014 sedan a few weeks ago. I had it serviced at a local Genesis dealer, who failed to find any problem with the engine and they reset (turned off) the check engine light indicator. Three weeks later the check engine light is on again. (orange, non-blinking each time). Gas cap is secure and driving is non-eventful. Any advice? Bring to Autozone? Back to dealer?
thanks