Hi all, got engine light on on my s3, had it scanned and got 3 codes. My main concern is P1297 - fault location - turbocharger/throttle valve, hose connection pressure loss. Probable cause - hose connection. I know that seems pretty self explanitory but I'm no mechanic and would like to check it myself? Anyone else had this code before? Also sometimes after I've started it the turbo doesn't work but if you turn off ignition and re start it it works ok. i always assumed it was a split hose or similar as once you hit 4500rpm the turbo kind of drops off like the pressure has gone. Also got code P0420 which is related to the cat.... Any help greatly appreciated.