Well I've had the tighten gas cap warning for the last year at least on my 07 Type-S. I took it to the dealer 2-3 times but they couldn't reproduce the issue. So nothing was done. After the warranty expired I gave up trying to fix it. It prgressively got worse to the point where it would come on 2-3 times a day nearly everyday. I searched here and read about replacing the gas cap, fuel tube and purge solenoid. I really didn't think the cap or fuel tube were damaged so I bought a solenoid online for about $80. Well after about 2 weeks no tighten gas cap warning. So I guess my issue is fixed.

 

Cool.

 

yea that was the problem bro i had to go to the dealer twice about this issue. and after showing the service advisor the TSB that this is a problem they change it under warrenty. also have you got a code P0171 bank 1 lean i get that all time got it check out and they change the MAF Sensor and i got a PCM update but that didnt work. Put hopefully the purge valve sensor change can solve that issue as well. how many miles you have on your type s

 

and this is the correct part number...........

36162-RDV-J01

 

Where is the Purge Solenoid?
My dealer told I need to change the fuel Regulator it is not under drive-train warranty?? my bumper to bumper has expired too.
Wha? this problem started at 30,000 miles. I now have only 50,000

Seems this worked for you. where is the part located how do you install?

 

next to the throttle body,

 

had the issue and dealer replaced the gas cap...so far so good. *knock on wood*