Full boost pressure error

5.0 V10 50v biturbo - 571 bhp
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c3nturi0n
3rd Gear
Posts: 467
Joined: Tue May 29, 2018 10:50 am

Full boost pressure error

Post by c3nturi0n » Tue Aug 28, 2018 12:05 am

I had a similar issue over the weekend driving out of Austria... at one point I tried to overtake and kicked down at which point I noticed small drop in power, MIL came on. Car continued to run fine and 1100 miles later I arrived home safely :).

I did quick VCDS scan last night and I got the following two
- P0299 (on both banks)
- Knock sensor 1 (G61) - P0328 - signal too high - intermittent

any hints or clues or what could that be related to?

ps. MIL was erased, codes did re-appear and I can confirm that car runs and drives smoothly.
2008 RS6 Avant (Monza Silver)
- Stage II MRC tune with gearbox (720PS/850Nm)
- MIJ Powerflow exhaust (non-res)
- H&R ARBs

zex
Neutral
Posts: 46
Joined: Sun Mar 06, 2016 3:50 am

Re: Full boost pressure error

Post by zex » Wed Aug 29, 2018 8:11 am

http://wiki.ross-tech.com/wiki/index.ph ... 299/000665

I also, from time to time, have knock sensor signal too low - intermittent fault. I had it for all four knock sensors and I replaced two after some time but this fault still comes back sometimes. You can see in the list, for particular fault, the number of times it happened. If it' only few times I think it should be ok.

Since you are not reaching full boost, you might want to check all hoses that go from turbos to and from intercoolers (condition and clips). Maybe also vacuum lines.

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