Question about 1998 Toyota Camry
P04440 is a generic error code for the fuel vapour evaporative emission control system. This system is designed to trap fuel vapour build up in the fuel tank in a carbon canister and then to release these trapped vapours to be burnt when the engine is running. The car has a diagnostic process by which it checks the pressure integrity of the system. Anything out of the ordinary can result in the P0440 error. Check that your filler cap has a good seal and that it is fitted tightly. If this sorts out the problem the error code and CEL will disappear within a few restarts of the engine.
Posted on Nov 22, 2010
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