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2400 miles and throwing a p0420 code..seriously?

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Old 07-25-14, 12:25 PM   #1
greeknasty
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Default 2400 miles and throwing a p0420 code..seriously?

i have a 2014 anyone familiar with this issue? google shows up cat issues...seriously?!?!?!

edit:
also forgot to mention that the Check AWD message and TRAC off message were showing..i assume this happens everytime the CEL comes on?
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Old 07-25-14, 12:47 PM   #2
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greeknasty, have you taken a look at this thread? Call the dealer and have them check it out. Could be caused by overfilling the gas tank according the thread I linked. Good luck.
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Old 07-25-14, 12:55 PM   #3
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Could a loose gas cap throw the same codes?
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Old 07-25-14, 12:58 PM   #4
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thanks didnt see that on search. i did "fill it up"'(i dont keep pumping once the gas pump stops) 3 days ago and picked up relative from the airport...now im at a quarter..would the code be thrown now or when i filled?
i have a appt monday at the dealer so we shall see...
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Old 07-25-14, 12:59 PM   #5
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Quote:
Originally Posted by offroad200 View Post
Could a loose gas cap throw the same codes?
no where on forums have i seen gas cap being the issue for p0240 so i assumed it wasnt an issue
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Old 07-25-14, 01:08 PM   #6
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You can try removing the gas cap and replacing it. But it may take driving a few minutes for the light to go off. The important thing is you're under warranty. The dealer should take care of it.
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Old 07-25-14, 01:14 PM   #7
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This code indicates catalytic converter inefficiency, meaning it's operating at less than 99% efficiency or something is making it operate inefficiently. Take it to the dealer and have them deal with it. It's under warranty, no reason for you to worry.
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Old 07-25-14, 01:24 PM   #8
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i just hope the dealer doesnt clear the code..and tell me its bad gas or something and call it a day.
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Old 07-25-14, 01:52 PM   #9
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Quote:
Originally Posted by greeknasty View Post
i just hope the dealer doesnt clear the code..and tell me its bad gas or something and call it a day.
They can but they won't, knowing if there is a real problem the code would just come back.

By the way, the last time it happened to me, I fixed it by cleaning the gas filler cap seal with some light oil when I noticed there was some dirt on it. Just some oil on paper towel and wiped the seal.
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Old 07-25-14, 01:54 PM   #10
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Quote:
Originally Posted by felix168 View Post
They can but they won't, knowing if there is a real problem the code would just come back.

By the way, the last time it happened to me, I fixed it by cleaning the gas filler cap seal with some light oil when I noticed there was some dirt on it. Just some oil on paper towel and wiped the seal.
thanks may try..

i also forgot to add that i got teh Check AWD System and trac off message but i assumed it always does that when CEL goes off
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Old 07-28-14, 11:09 AM   #11
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got back..they cleared it and drove it(waste of time considering this code takes a while to come back) and didnt see nothing that popped out at them and told me to keep an eye out..
hopefully it was somethin stupid and not a issue in the long run.
thanks for your replies
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Old 07-28-14, 03:01 PM   #12
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I would invest in a obd code reader also.
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Old 07-29-14, 08:52 AM   #13
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greeknasty, maybe it was a fluke and not a sign of a serious problem. At least it's been taken care of for now. Thanks for keeping us updated.
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Old 08-17-14, 12:49 PM   #14
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ok so the code came back....figures!
heres what gets me..the code is a permanent DTC. if you dont know thats the new stuff 09 cars and later have that once the code pops up it doesnt go away regardless of clearing with tool and the only way for it to go away is fix the problem and the computer sees its fixed or do the universal trip drive pattern.
i checked the voltage from the o2 sensors and all look normal..also there were cat temps showin 500+ and then another number was 200-300 below not sure what those were.

can anyone enlighten me on this?
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Old 08-17-14, 01:42 PM   #15
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According to my elm327 my cats run at about 1200 F after warmup. What's you steady state voltage on your O2's? Iirc I'm at about 0.8v at cruise.
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Old 08-17-14, 01:42 PM
 
 
 
 
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