Hi guys im new to the forum, i have been scanning it like theres no tomorrow, all week about retro fitting components. Il start by saying im 19, a technician for subaru and i bought my beautiful audi a3, 2.0tdi quattro hatchback. The guy who i had it off had got it remapped and had a panel filter put on. Also the common rear wiper motor doesnt work! Now, i was driving my car home yesterday and just as i was passing where i work my 'esp' and 'abs' lights came on. Damn! Shortly followed by a fluctuaiting rev and speedo counter, followed by every single light flashing on the dashboard! I pulled over at work and switched off and on the car and the lights were still on. Drove home, switched the car off and on and then the immobiliser cut in after 1 second! I started it this morning sweet as a nut and only the esp and abs light on the dash. Plugged my scanner in and found the fault codes as follows : ERRORS PRESENT SINCE THE BEGINNING OF COMMUNICATION P0180 Data Bus control missing communication from combined tool 018058 MEM P0180 Bus/data transmission- message from ECU missing 018045 MEM P0180 Bus/data transmission-message from A/C system ECU missing 018043 MEM P0180 Data Bus control defective 018056 MEM P0180 Bus/data transmission-message from Airbag ECU missing 018044 MEM P0180 Data Bus control missing communication from ABS ecu 018057 MEM I took it for a short run and by the end of my drive it was all lit up again! P0180 is the single code staying on and now i am having difficulty connecting with any systems, i.e it is loosing connection when connecting. I have tested dashboard actuations and all is good. My initial thought is the main ECU? I jet washed my engine off about a week ago and it has been fine until now. Anybody think it could be the ecu? Thanks guys n girls!