Meli1313

Hi people, I have gotten an OBD2 scanner and have found 4 DTC stored into my 2002 Nissan Maxima GLE. I need help with them, I have to pass an emissions test in 8 months, and I dont want to have to pay too much to fix it. I have been doing some tuning up on it, and now those codes are just angering me because I will have to try and figure out how much its going to cost me (If I decide to keep the car at this point)

Anyway, here are the codes;

P1800 - VIAS control Selenoid
P0455 - Evap large leak
P1448 - Vent control Valve
P0021 - A camshaft position timing over - advanced or system performance bank 2

I know from my research that the 2 middle codes are common codes for these cars, and some dont ever get to erase those codes even after changing the selonoid. This car has had the MIL for a long time on. I myself work for the Emission Control Drive Clean of Ontario, and I know a bit about codes and monitors. What I am looking here, is people that have or had the same issue, ways to fix it myself, yes I am a woman but have been searching and learning and fixing that car given to me by my mother in law. So please, if you have or had any of those codes, and have ideas on how to fix them or look for the correct fix, please let me know.

The P0021 is kinda scaring me, I am not sure if it has to do with a sensor for the catalytic converter, Bank 2 sounds like it anyway.. Could it be something else? I know I have many questions...

Thanks so much for anyones answers here.