Same here - visited Cardiff Audi and replaced the part on the drive in 5 minutes. One fault cleared but another (potentially) couple found the next day though!
Emissions control light is on and the dealer has just confirmed that a coolant leak is present due to a fault water pump and thermostat. Hopefully both are related, as the only code that came up on the OBD11 reader was P00B7 (Engine coolant flow insufficient). Fingers crossed!