Do not worry about it.
P0445 - Evap engine emission leak
Evaporative control system
The car is equipped with an evaporative control system, which prevents gasoline vapor from being released into the atmosphere.
The system consists of a fuel tank with filler pipe and cap, two rollover valves, a Fill Limit Vent Valve (FLVV), vapor vent lines, a charcoal canister, a purge line, and a purge control valve and engine connections. In addition, there is a pressure sensor connected to the fuel tank and a filter-protected Canister Close Valve (CCV) on the atmospheric side of the canister, for system diagnosis.
The gasoline vapor is channeled through the rollover valves and the FLVV via the vapor vent lines into the charcoal canister, where it is stored. When the engine is started, the gasoline vapor is drawn from the charcoal canister to the engine's air intake system and into the combustion process.
If any vent gas cap or vaccum hose its "open" the ECM receives a signal and stores a malfunction (check engine Light)
Yes. The gas cap could be the problem.
And about the fuel injectors cleaner thats the way to do it with out remove them.
Good Luck and best regards.[/Quote:31010d7bd8]
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Wednesday, January 16th, 2008 AT 9:26 PM