Hi all, my brother just bought an Octy vrs 05 plate,205k on the clock, one owner from new. It has a few problems;

On/off boost in all gears under full throttle, I read could be N75 valve?

Also has a few faults codes;

16396 (p0012) bank1, camshaft advance

Specification not reached

16795 (p0411) secondary air injection system

Incorrect flow recognised

Sporadic fault

17748 (p1340) camshaft position/crankshaft position sensor

Incorrect assignment

18010 (p1602) voltage supply terminal 30

Voltage too low

Sporadic fault

Help/ideas anyone?

hey buddy

I had similar problems with jumpy acceleration for good while. was told to check a lot of stuff like MAF,boost leak/busted airline or change the DV.

Eventually bought a new N75 and hey presto

NOt sure about the fault codes but I had to have a tensioner arm replaced and think i had a similar code or two to your bro

Okay cool, thanks for your reply and help :-)

I would be looking towards the timing possible the belt might have jumped a tooth?

P1602 and P0411 wont cause problems that hes having

Thanks for the reply :-) Im from Birmingham, would you happen to know any garages that can check this, as the local garages wouldn't have a clue lol