2004 Toyota Sienna Van Diagnostic codes P0441??

Joe69

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#1
2004 Toyota Sienna Van 60k miles. All of a sudden 3 dashlights stay on when the van is running. I called the dealer and they said is something related to emissions. I got a obd-II reading and it shows codes P0441, P0442, P0446. It says something related to the Evap Emission control system. But yet I don't have any idea where to start. Any ideas will be gladly appreciated, thanks Joe.
 
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#2
You might want to check your gas cap first and make sure it is not cracked and is on tight.....then have the codes reset and see if they come back on....Jim
 

Joe69

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#3
Thanks a lot, the gas cap was so loose and my cousin tightened up and everything went back to normal.