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Toyota Camry
Toyota Corolla

I have a Toyota with a check engine light on and code P0440. What does this mean?

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Wiki User
September 19, 2007 1:05AM

The code means you have a problem with the evaporative emissions system. Generally the cause is a loose gascap. Before spending money on diagnosis, make sure the cap is tight and have the code cleared. If the light comes back on, the system needs to be checked for leaks, faulty canister,and/or vacuum valves.