[Robby]

Is this car already out of warranty?

Shifting issues with a check engine light are resultant......the car is operating in base settings...IE 'get home mode'.

My first thought, since this is post fueling, loose or internally frosted gas cap. A frosted gas cap will allow breathing in both directions........it is only supposed to allow air into the tank.....not out of the tank. If the self test indicates excessive air leakage a 'Evap' code sets and the car goes into limp mode.
Same occurs if the gas cap is not fully seated (tightened).

Rob

 

[Robby]

One of the codes was

Barometric Pressure Circuit Range/Performance. P2227


Basically, it's very cold out and the turbo is having a hard time overcoming that is what the mechanic told me. It's supposed to get back into the 30s and 40s the next couple of days so hoping that will be better on the vehicle.
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Pay attention and address only the first code that is stored. Any following codes are generally a result of the primary code (#1)

Rob

 

[Robby]

With my limited knowledge of car mechanics, do you guys think those codes are something that will fix themselves with warm weather coming in(going from -20 to 40 degrees tomorrow)?

How long would you wait before taking it back into the mechanic? Definitely can still feel the "no boost" in my car when getting up to higher speeds.

It may clear up once the weather warms.
It is not uncommon for frost to grow in the intercooler tubes.....especially if the car is being used for short trips.......this will affect turbo pressure as a obstruction.
There have been reports of PCV systems making frost as well.......I do not know what codes could come up if this was the case.

I would recommend not getting too excited till the weather is above freezing for a couple days.

Rob