10 vag codes!!!! Problem continues

Ok fitted my exhaust day before yesterday, and fitted my second lambda sensor again, and cleared all codes.
All was fine for 2 days.

Just now driving back from work on highway TCS light comes on and boost is only up to
.04 bar (usually peak to .06)

got home, switched off car, then switched back on and engine management light comes on with TCS light

read the codes and I have 10!!!!

I have MOT in 45 minutes...F***K always same crap

these are the codes

16486 P0102 Mass or Volume Air Flow Circ Low Input

16518 P0134 O2 Sensor Circ.,Bank1-Sensor1 No Activity Detected

17833 P1425 Tank Vent.Valve Short to Ground

17955 P1547 Boost Pressure Contr.Valve Short to Ground

17843 P1435 Sec.Air Inj.Sys.Pump Relay Circ. Short to ground

17829 P1421 Sec.Air Inj.Valve Circ Short to Ground

17697 P1289 Turbocharger bypass valve short to ground

17525 P1117 O2 Sensor Heater Circ.,Bank1-Sensor2 Short to Ground

17522 P1114 Bank1-Sensor2 Internal Resistant too High

17523 P1115 O2 Sensor Heater Circ.,Bank1-Sensor1 Short to Ground


please help!

seems like something to do with short circuit or battery connections but they all look fine...

fuse box in car or up front in engine bay?

passenger side under glove box right?
how does the shielding come off??? pulling isn;t doing it much good...

you mean where you plug in vagcom? WHere the huge fuses are?

you mean one of these?

yeah ok....found it now

there is one brown one which is burnt through/

gonna go buy a new one nw and I'll see if that fixes it...
then to MOT...better be that one! lol

although can't really laugh about this...any other day would have been ok...

hey mate chris, gotta say a huge huge shout of thanks goes out to you. I am slightly color blind so thought it was brown but its actually red!
Got a new one and all is well again! 10 codes deleted and boost is back to normal!

Car is at MOT station (vw Adui dealer) now, but when I get it back I will take a picture and circle the one you need to swap when this happens to anyone else in the future.

again chris thanks!

yeah cheers for that

however, I failed MOT

I have a decat and it was a no go...now I'm gutted. I need to put my old DP back on, however then I have to go from 2" DP to 2.5" catback. Hwever they do not seel those clamps in that size (reducing) anywhere here.

DO you think that if I used a forge silicone hose in that size it would be allowed?

I mean if that gum gum stuff is allowed then that should be too right?