I have an 03 TB with about 120000 on it. We've been fighting this problem for about 3 months now. The Reduced Engine power light comes on and the SES light. We have to restart to clear it. Originally we had 5 codes, we've had all of those fixed. (I can't remember all the codes, but it include the APP and the TP and our last code was for the thermostat). We just recently had the thermostat and spark plugs replaced. However it is still happening. Also when I pull over to restart it after the lights come on it revs super high. Also sometimes when I first start the vehicle it revs high. The last time it happened it gave out the code 1221. We already had this fixed so we are unsure why it is coming up again. Also we have paid to have it diagnoised twice and after all this time and money it's still happening. Any help/advice would be greatly appreciated. Oh and on a side note we have smelled a sweet smell sometimes when driving/starting the vehicle even after the thermostat has been replaced. Please help!