Hello im new to this forum seeking help with my audi a3 2.0 fsi quattro engine code BWA 200BHP 2006.

POWER LOSS: gutless cant feel turbo even kick in has codes for turbo charger by pass valve control circuit P0033, P0444 EVAP purge control valve(yet fitted new purge valve), P0243 turbo wastegate solonoid A( fitted a new wastegate solinoid), P0030 O2 sensor heater control circ bank 1 sensor 1 (reads 0 on live data)...? any help please....

DRIVERS DOOR: NOTHING WORKS AT ALL.... NONE OF THE ELECTRIC WINDOWS WORK ON DRIVERS DOOR, KEEPS SAYING DRIVERS DOOR OPEN.... AND NO CENTRAL LOCKING WORKING HAS FAULT CODE 01331 DRIVERS DOOR CONTROL MODULE. found one broken wire in the door shut broken (brown wire repaired that and fitted new electric window switch)  still nothing works ....

SPEEDO: DOSENT WORK TRYED NEW CLOCKS AND WOULDNT RUN PROPERLY SO PUT THE OLD ONE BACK ON NOW THE TRACTION & STEERING LIGHT IS ON AND WONT DELEATE ... AND CANT SEE ANY SPEED SENSOR ON THE GEARBOX....(YET THE MILEAGE STILL CLOCKS UP)

ANY HELP WOULD BE GREATLY APPREATED .....  

Steven.

A few questions first.

[1] Are these faults recent?

[2] Did they all begin at the same time?

[3] How old is the battery?

[4] Did you get the codes from a code reader of your own or from a professional?

[5] Has the car been modified in any way?

i bought the cat with the faults apart from the steering & traction control light are now on from fitting another set of clocks wouldn’t stay running so i put the original ones back on now the traction control an steering lights stay on .

as above i’ve fitted a new evap sensor and turbo waste gate solenoid but still have the faults and the cars gutless 

You have not mentioned the battery yet. Be aware that a defective battery can cause false error codes and warning lights. It can also cause the engine to enter limp mode, which sounds very much like your symptoms.

As a first step I recommend you get the battery tested on a professional deep discharge machine that will detect internal faults and its state of health. Only once you have a good battery that is also coded to the car will any error codes become meaningful.

well the turbo dosent kick in at all won’t rev over 4000 rpm i can do a battery test on my machine but i dont think its that all faults are turbo related and drivers door where nothing works at all im getting its the control module? checked and repaired a brown wire in the door shut but still nothing and the speedo on live data it works so im guessing its the gauges but when i plug in the second hand gauges it starts an cuts out strict away so im guessing they need to be programmed? 

I really don't think I can help any further Steven. The only way I know to approach a problem like yours is based on logic not guesswork. Let's hope somebody else will chip in with ideas for you.