EPC light on with flashing Engine Management Light

[RS6Mike]

Went out for a drive this morning and got less than a mile when the RS6 started to judder. Was going about 30mph. Noticed the EPC light was on and I thought it may have been a coil pack/injector problem as I had something similar on my old V10 S6.

When I needed to slow down to say 10-20mph the judder would be more severe and then the engine management light would flash. When I'd speed up to say 30-40mph the judder would be less severe and the engine management light would stop flashing but the EPC would remain on. The car seemed to be in limp mode.

My journey lasted about 8 minutes and when I pulled up, the electric parking brake fault came on (I'm aware that this is the first thing to fault whilst there's an issue elsewhere).

Left the car for 20 minutes, got back into it and it was fine. Drove 20 miles at all sorts of different speeds and returned home, everything back to normal.

Does anyone have any advice? Cause for concern?

[it_s8]

Need to read the fault codes from the ECU to have any real clue otherwise its really just guessing......

[SteveG]

Failed sensor