[WhiteNYMsport]

Hey team, quick question here.

Driving recently and in boost and about 3500rpm on the nose my car has started to stumble infrequently. Pretty hard few jolts with that ultra low popping noise or "chuff" noise. Turned off the auto code clearing on my JB4 and now it reads a code. Only problem is, I have no idea what this code is because I can't find what it's reading.

JB4 diagnostic mode will blink then sit on zero a second, swing to 20, then to 120, then to 90, then back to zero, then blink again. I figure that should mean P02C9 but I can't find that, could also be P2C90... I really don't know. Any tips?