Code P0449

Tiny
CINNAMON555
  • MEMBER
  • 2009 HYUNDAI SONATA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 59,400 MILES
My trusted mechanic was too busy, so against my better judgement I had my oil changed at one of those quickie tire places. My car listed above had 49,000 miles on it when I got it. I had already put about 6,000 to 7,000 miles on it and needed to get oil changed. They ended up changing oil, oil and A/C filters, checked spark plugs, rotating tires etc. Right after that I got a strong smell of gas in the car periodically. That stopped, but then after driving out of town on a bumpy highway my engine light came on. It went off on its own. Over next couple weeks I got I whiff of gas a couple times. I thought maybe it was bad gas. Went out of town again on same bumpy highway when I got back engine light came on again. This time I went to AutoZone and read code it was p0449. (Canister purge valve). My first question is: do you think it was due to something out of adjustment from that shop that worked on my car? Or maybe that's a coincidence and it's from driving 75 on that bumpy highway. Also, do you think this is going to be an expensive fix? Maybe give me a price range if possible. Thank you for your reply.
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Saturday, January 29th, 2022 AT 8:38 AM

1 Reply

Tiny
SQM
  • EXPERT
Hello,

The code P0449 gets triggered when the PCM detects that the fuel tank pressure is too low, typically due to a stuck canister close valve.

Are you experiencing any drivability issues?

If the code does not exist any longer, it is possible that it got turned on due to certain vibration that could have made the harness get loose.

I have attached some helpful information below.

Please let me know if you have any questions.
Thank you.
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Saturday, January 29th, 2022 AT 9:37 AM

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