P0457 Trouble Code
06-20-2012, 11:23 PM
#1
Registered User
Thread Starter
iTrader: (4)
Join Date: Nov 2003
Location: Sacramento CA
Posts: 575
Car Info: 2004 WRX Sport Wagon
P0457 Trouble Code
Hello I-Clubbers!
Has anyone found the cure to the P0457 trouble code problem? The check engine light turns on when I'm at freeway speeds, just after a few days of refueling. I've already replaced the gas cap; didn't help. I checked the vacuum hoses that's near the alternator; all hooked up. (Read some of the past postings) I don't think it would be the fuel pump, otherwise I would feel my WRX wagon hesitating. I'm thinking it could be the vapor canister underneath the rear bumper on the passenger side. I should change out the fuel filter, since I didn't change it at 180K as well as the plugs. Now I'm thinking, those could be the problem. Any thoughts?
btw: My WRX wagon has roughly 200,1XXX miles on the OD.
Ed
Has anyone found the cure to the P0457 trouble code problem? The check engine light turns on when I'm at freeway speeds, just after a few days of refueling. I've already replaced the gas cap; didn't help. I checked the vacuum hoses that's near the alternator; all hooked up. (Read some of the past postings) I don't think it would be the fuel pump, otherwise I would feel my WRX wagon hesitating. I'm thinking it could be the vapor canister underneath the rear bumper on the passenger side. I should change out the fuel filter, since I didn't change it at 180K as well as the plugs. Now I'm thinking, those could be the problem. Any thoughts?
btw: My WRX wagon has roughly 200,1XXX miles on the OD.
Ed
06-25-2012, 09:59 AM
#6
Registered User
iTrader: (3)
Join Date: May 2005
Location: Milpitas
Posts: 847
Car Info: 05 WRX Wagon and 08 Civic Si
fuel system vapor leaks are tricky to diagnose at my dealerr we have to use a smoke machine to fill the system with smoke then try to find the leak.
charcoal canisters are at fault a lot of times, they can leak as can any fitting in the system but also they can become clogged internally and cause the same fault as a leak.
charcoal canisters are at fault a lot of times, they can leak as can any fitting in the system but also they can become clogged internally and cause the same fault as a leak.
06-25-2012, 12:38 PM
#7
fuel system vapor leaks are tricky to diagnose at my dealerr we have to use a smoke machine to fill the system with smoke then try to find the leak.
charcoal canisters are at fault a lot of times, they can leak as can any fitting in the system but also they can become clogged internally and cause the same fault as a leak.
charcoal canisters are at fault a lot of times, they can leak as can any fitting in the system but also they can become clogged internally and cause the same fault as a leak.
06-28-2012, 03:42 PM
#8
07-17-2012, 09:12 PM
#9
Registered User
Thread Starter
iTrader: (4)
Join Date: Nov 2003
Location: Sacramento CA
Posts: 575
Car Info: 2004 WRX Sport Wagon
Took in my 04 WRX wagon today to have the trouble code "P0457" checked out. Turns out, it was the solenoid valve that went bad after the smoke test was conducted. Waiting for the replacement to arrive and should be fixed by Thursday. 
Thread
Thread Starter
Forum
Replies
Last Post
