HELP!! P0440, P0441, P0446

Hey guys,

I just recently purchased my first Tacoma! It’s a 2002 2.7L base in dark green with 82,515 miles at purchase. I’ve had it for over a week now but on my third day of owning it I got a check engine light. Took out the trusty dusty code reader and they came back as P0440, P0441, and P0446. I brought it in to get it taken care of and they replaced my gas cap with a 3rd party one, and cleaned off some contacts and said it was fixed (it did get its front shocks replaced too since they were leaking). After getting it back two days ago the lights came back on. I assume someone has had this problem please let me know what your fixes have been. I’m excited to own my first Tacoma, and see where the journey takes me. Much appreciated!