The first thing I'd suggest you do is clear all the codes, as some date back to 2003. Once cleared, go for a drive (leave overnight if necessary to reproduce symptoms) and then scan again. Post that scan and go from there.
With regards to the current scan, I'd say it's possible a faulty connection on the instrument cluster, or, since both engine and ABS modules are throwing errors, then (if the same errors reappear), check the physical connections to these ECUs for water ingress, both of which are in the plenum chamber, and open to the elements.
Also pop along to the Introductions page and introduce yourself. We also have an affinity for photos, so brownie points on offer there.
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2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts
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Sold!  2008 S8 D3 5.2 V10 - Engine: BSM, Gearbox:KLW, Colour:LY7F Suzuka Grey Pearl Effect, Interior:Black/Black with Silver/Black valcona leather with carbon atlas inserts, Bang & Olufsen, Heated windscreen, Soft-close doors, TV, DAB, AMI, Quad Zone, Auto Boot, Auto dim Mirrors, Keyless entry, PDC with rearview camera, AFS II Headlights
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