2004 a4 1.8tq bex I posted a thread the other day as the cel and esp lights came on when I started the car. Scanned the car and got P0102, so I changed the MAF for a brand new one this morning rather than faff about with cleaning the old one. Deleted the code and cel went out, and within 200yds of driving so did the esp light. All was good on a 10 mile test drive, and was fine too whilst driving 20 miles to work later on. However, when I got to work I had to turn the car off to open the gates with the blipper on my keys, started the car again and both lights were instantly back on. Code says P0102 again, it's running fine so don't know where to look next now. I am really keen to get this sorted quickly as I spent a LOT of my time driving and it's so irritating! I could do with trying what I can myself at home as I need to be able to throw the car back together and go if I get called out, so a garage isn't ideal at the moment. The tip that solves it wins an Easter egg! Thanks guys.