gchahil

I have 2001 Corolla LE 4 Dr Sedan and It has about 65000 miles on it. Recently, it suddenly started giving engine CHECK light. I got it checked at AutoZone in New Jersey and AutoZone found the code as P0446. What does this mean and what is wrong with the car? How I get it fixed? Please help Gur Chahil

It has about 91000 miles on it.

The CHECK light on the front panel comes on and then after 2 or 3 days goes off. Then it appears again and stays a couple of days. I found out, using a tool from Auto Zone, that the code is P0401. This code indicates many things. Please advise how to fix the problem and exactly what needs to be changed