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When I got these codes it was because of a poorly seated AOS to TB hose. I had removed to clean the TB and Pipes and I didn't seat it back properly. I think you have a vacuum leak unless you have a defective MAF. But people do have issues with the Oil fill and dipstick tubes. Any where a vacuum is present for both banks.
As far a AOS vacuum, the quickest test you can do is remove the Oil fill cap while the engine is running to see how much vacuum you feel there. Should have some but not overpowering.
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2002 S - old school third pedal
Seal Grey
Last edited by kk2002s; 10-11-2019 at 03:27 PM.
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