Hi, I'm new here and been having a problem with my 2006 A4 2.0 TDI with BRE engine with only 32k kms. About a month ago, I experienced a sudden loss of power in my engine and saw that my EGR light is on. It feels like the turbo does not engage as the engine is slow to rev and seems like on safety mode. Brought car to my indy shop and connected it to the computer and revealed this problem: (1027) P0403 exhaust gas recirculating flow malfunction Had the EGR cleaned to no avail. But the car now sometimes has the power back, on and off. Been reading forums to decide on whether I should take it to Audi but seems like most diagnosis i've read is wrong and parts needed to be changed but did not address the problem. Anyone out there had this problem and was able to fix? Help!