Random misfiring, and lots of thrown codes after a trip to my favorite driving road?

[fs454]

2014 b8.5 here - I take my car up to the Angeles Forest almost every weekend for a cruise. I drive it very spiritedly pretty much all the time, but today on the highway back from the mountains I was overtaking a car on the highway and got a bad vibrating misfire and some odd light on the dash (I think it was EPC?) but no CEL. The misfire was pretty bad and it was as if I had blown a coil or something. I turned off and restarted the engine while rolling down the highway and everything seemed to go away, but I pulled over and ran a code scan with Carista.

I got:

OBDII P0306 Cylinder 6 Misfire Detected
Engine 06355 (No information provided)
Power Steering 02306 Temperature Sensor, Rear, Passenger Side G427
Heater and Air Conditioning 00713 Left Center Vent Motor V110
Video Audio (forgot to screenshot this one but it's a backup camera signal error)

All of it hasn't come back and it's been 24 hours since the incident, what would cause all of this simultaneously? I know I'm going to get it to the dealer and they're going to be like "welp, it's not doing it now, so we can't help you" just like last time when I rolled through after the car went into a random limp mode while pulling into traffic a few days after I bought it (they blamed the fuel, said it was a fluke, never happened again).

The car is a CPO, 39,900 miles, and has zero modifications. I drive it hard and never have it in D or S, but especially in stock form this car shouldn't ever break a sweat right? It's getting me very paranoid that this thing has lemony tendencies so early in my ownership of it, well before I ever planned on tuning it. Is it normal to run into technical flukes like this on this platform? I find this very, very strange and I know the dealer is not going to agree with my worry.


:Edit: the "06355" code doesn't show up anywhere on the internet but based on some poking around, P0635 is a power steering fault code which is in line with the other power steering error I got. Is it possible that carista didn't read it correctly and that one is actually 0635?

[hilmar2k]

You sure those all popped up together? I would always see some random codes when scanning.

[Rodizzle]

I’m sure the other codes are just stored from previous faults , nothing to do with the EPC . Misfire caused the EPC . It could be a shit load of things tho ; plugs , coil , cat , SC intercooler . I had my cat blown at 45k ( wasn’t tune either ) .


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