So my car decided to throw some codes out. They happened 4 days after an oil change, but I can't assume that it had anything to do with it. 2007 Civic LX 4D R18, 38k miles.

So I got hit with P1454 twice, Evaporative System Vacuum Test Malfunction

P2422 twice,Evaporative Emission (EVAP) System Vent Shut Valve Close Malfunction

and P0452 Evaporative Emission Control System Pressure Sensor Low Input

Kinda freaking out, car seems to be running fine from what I can tell. I installed a K&N Typhoon about 15k miles ago and never had a problem with it. Had an Si intake welded on about the same week at a muffler shop back then. Zero problems all the way until now.

Powertrain warranty still sticks. I have NO clue what could have caused all this. Worried that my intake or my exhaust may have caused the problem so I don't want to bring it in to the dealership just yet. Would change to stocker intake, but don't have it anymore. Got rid of it when I had no problems at 10k miles.

If anyone figures it is the intake and lives in the San Jose, CA Area, I'm willing to trade for a stock intake figuring someone else may have better luck. But I don't want to damage anyone else's car if that's the case. Will buy a stock intake.

Any clues guys?

 

Check and make sure you Gas Cap is secure. I think those codes are related to the fuel evaporation system but not sure.

 

if it dont click trice it aint rite.

 

its the gas cap for sure

 

Hm, gas cap is secure, I'm usually pretty careful about securing it, I've reset the ECU multiple times after a fill up last time, and it was still going. Would it have anything to do with the intake or the muffler? Otherwise, it is still under powertrain warranty and I can bring it in to the dealership without worrying.