P0XXX codes are universal for all OBDII vehicles
P1XXX codes are manufacturer specific

The reason they ask for the VIN is to establish vehicle make, year, & drivetrain.

P0442 is a SMALL leak. Make sure your gascap is on tight, and clear your code (or wait for it to clear itself).

Something that I see on this forum too much is people recommending that other people buy parts to TRY to fix a problem. What is the point in "throwing parts at your vehicle" just to figure out what the problem was. You are supposed to troubleshoot the problem FIRST, then buy parts to fix it. Not the other way around.

 

It could be as simple as not overfilling the gas tank. I overfilled the tank and had the same problem, I reset the PCM, and the code never came back.

 

don't you think its sad when your car can tell you to tighten your gas cap!!!

 

i have the same code in my 2001 neon, and both o2 sensors have been replaced and the cat has checked out fine so what could it be. i really dont care about it, car runs fine but the light is just freaking annoying.

 

This all turned out to be a bad fuel pump. It was leeking and the connector was melting. I was real close to my fuel tank blowing up on me.

 

what is an OEM gas cap? i bought one at advance that has to be tightened 3 clicks. is that right one?