I have a 1995 Cadillac Deville 4.9L. The service engine light is on and recently stays on or off for periods of time. When I start my car, exhaust fumes enter my cabin,I believe now through the interior climate vents. All I know is this problemis very toxic and not healthy. I retrieved some codes thanks to a couple of members of this site:[/align][/align]P013 History[/align]P044 History[/align]P046 CURRENT[/align][/align]Can anyone please tell me what they mean? The official Cadillac and GM websites are not of any help. I have been searching the internet forever with no success. I would rather identify the problem, then go to a shop and request a specific service. I do not want to be fooled by paying for several unnecessary repairs. [/align][/align]Thank you[/align]

 

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