My 2001 Infiniti QX4 needs a new MAF sensor and Evap Pressure Sensor. I found the MAF on ebay, but can't find the evap pressure sensor part # 223650Z800. I have had the P0450 code for a while, but the MAF blow out has finally motivated me to fix up everything on the old girl.

All of my codes are:
P0450 Evap Pressure Sensor
P0171 Bank 1 Lean
P0174 Bank 2 Lean
P0732 Gear 2 Incorrect Ratio
P0731 Gear 1 Incorrect Ratio

If anyone has any options that replacing my MAF sensor and evap pressure sensor will help solve my problems (car has no power, not even enough to leave my driveway) I welcome any opinions. This is just my best guess, and I am certainly a novice.

Does anyone know where I can get my hands on a evap pressure sensor? It seems to be also called a boost sensor, but I would love some verification before trying to track one of these down.

Thanks,

QX4lemon

Try this site. after putting in year, make, model. Do a search for keyword "boost sensor".
There are two choices one for production dates before 03/01 and one for after.