2001 honda accord lx 2.3 vtec p1381 code

What is your question?

ive been having this problem for about a month or 2 were the check engine light comes on for a day or 2 sometimes even for a few hours then it goes away for like a week wen is on the car rpm wont go pass 3000 but wen it goes off the car runs just fine i change battery,spark plug cables,spark plugs,cam shaft position sensor,even a new distrubator with ignition coil rotor and cap and still does the same thing also change my valve cover gasket to clear any oil leaks

What makes this problem better or worse?

nothing

How long has your 2001 Honda Accord had this problem?

2 months