OBD Diagnostic Codes P0491 & P0492

JonH

Junior Member
Messages
390
I have had the engine warning light on for some time, helps light up the dash. Drives superbly(Angouleme & back) but thought I'd better get it sorted before the MOT. I assumed it was one of the O2 sensors but the DTC's P0491 & P0492 came up....AIR System Insufficiency Flow Bank 1 & 2.
Any thoughts as to what I should check and where to look for common errors.....I am not sure what I should be looking at.
Forgot to say its facelift 4200 2007

Cheers
 
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