Join Date: Jan 2019
Location: Londonderry, New Hampshire
Car Year: 2008
Car Model: Forester
Feedback Score: 0 reviews
Charcoal canister question causing P0457
Hi! 2008 Subaru Forester 2.5X Premium, Non-turbo Automatic with 120,000 miles. Past couple months have had P0457 code every 50 miles or so... Changed Gas Cap to new one (non OEM tho) and still get same code. Originally had hard time starting car after fueling, so changed my Purge control valve behind the alternator, that solved the hard-starting post fueling, but still get the code. Fuel filler neck looks good, and no obvious hoses off or cracked. Thinking could be Charcoal Vent Canister, but do not see any cracks or loose hoses. Hooked the green connectors under the dash, and heard several audible solenoids cycling more so from front of vehicle, did not notice a clicking around the Charcoal Canister. Should I hear one from the solenoid? I removed a square cover where I think the valve/solenoid is, but not sure if that is the only one and if that should be cycling on/off. Do I need to buy a whole new canister or can I just get the cylindrical valve that was behind the square endplate? I am enclosing what I Think is the solenoid valve, but not sure. I can't find that particular part Online and did not notice a part number on it. I may end up getting a Smoke Test but wanted to do what little troubleshooting I could do on my own. Have not blown out hoses to Canister or taken the whole thing off to check if flooded. I now am expecting my Lil P0457 to keep popping all the time with its damn annoying "CRUISE" blinker!!