To fix the code P0401 and P0446 on a Toyota Camry or Solara you will need to buy two parts (and no you don't have to replace the EGR Valve):
1. EGR VSV (Vacuum Switch Valve) part# 90910-12080 to get rid of the P0401 code * Located behind engine. Around $50 bucks.
2. Vapor Pressure Sensor VSV (Vacuum Switch Valve) part# 90910-12271 to get rid of the P0446 code (and also P0440, P0441) It is located on the bottom rear of the car near the Charcoal Canister (and no you don't have to replace the Charcoal Canister). Around $60 bucks.
*You might also need to replace the EGR Vacuum Modulator part# 25870-74090 if the P0401 code comes back. You can pop the hood and replace that by hand, it's easy. Around $60 bucks.
Try not to buy these at the dealer since they like to rip people off. After you get the parts (don't buy used since these parts get carbon dirty!), pay a mom and pop mechanic for the labor to do it since you don't have tools and a jack/lift for access, and they are much cheaper than the dealers.
Thanks TOYOPARTSMAN :chug:, if only all dealerships had that same fair cost mentality. But as far as labor costs, you can't compare to mom and pop shops.While dlaughingman is entitled to his opinion about Dealers, I do want those members who have not had the chance to see some of my posts, to know that I do offer 30% off MSRP and I only charge actual shipping costst plust $1.0 -$2.00 for materials, etc. I also have on more than one occassion offered opinion, information, links, etc. I am truly in here to help all of the TN members. So while some of the members may have had bad experiences, you won't have one with me. So if you want genuine OEM parts at a reasonable price, and some expert advice and service, please don't hesitate to contact me. I look forward to hearing from you all.
First of all, before you throw away you money, you need to diagnose the problem and find what EXACTLY is wrong.To fix the code P0401 and P0446 on a Toyota Camry or Solara you will need to buy two parts (and no you don't have to replace the EGR Valve):