Driving my new (75000k) car home the check engine light came on. I pulled over and read the owner's manual, tightened the gas cap, and drove on home. AutoZone found the following codes: PO455 EVAP Emission Control System Leak (Large), PO645 A/C Clutch Relay Control Circuit, P1081 Manf Cntrl Fuel & Air Metering, Auxiliary Emission Controls. They cleared the codes, but what do I do now? Where should I look to find what caused them? What is the best resource? (I use a Bentley Manual for my 535i.) Could a loose gas cap cause the P0455 code? When I picked up the car, the AC wouldn't cycle on because it was low on freon. Could this cause the P0645 code? What should I do to check out the P1081 code. Thanks for any help for a newbie.
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