Have a 1999 Toyota Avalon with a evap vent control problem

Asked by Kakbram Sep 08, 2016 at 08:52 PM about the 1997 Toyota Avalon 4 Dr XL Sedan

Question type: Maintenance & Repair

Check engine light comes on was told that my evap vent control is the
problem is this right

2 Answers
4,410

Up answered 8 years ago

do you know what the code is. They could other problems that cause EVAP codes. P0440. P0446. P0456 P0441. Are all codes for the EVAP system. If your code is leak related them you need to find the leak. That could a gas cap, fuel filler next, vacuum hose, vent control valve, charcoal canister, and a few other parts as well. You can find the leak with the aid of a smoke machine 4 psi of air pressure and a spray bottle of soapy water.

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