Hi all

This Audi intermittently goes into limp home mode, loses power(never happened when I drove it however)first time we checked it there were codes 17996(P1588)electro hydraulic engine mount solenoid valve open circuit, 17964(P1566)turbo charger boost sensor circuit control limit not reached and 17552(P1144) mass air flow sensor G70 open/short to ground. Codes were cleared, car road tested ok and has been fine till today, read codes again and only got 17996, was hoping it would have been 17964 again as most likely it would have been sticking turbo vanes, not done any more testing as car is ok nearly all of the time, though these codes appear he is not getting the MIL coming on, I am thinking that code 17996 would not affect performance. The only other thing i did notice is that Autodata in the known fixes and problems section do say that code 17964 can be caused by our old favourite the CTS though symptoms listed such as knock at idle and poor starting do not occur on this car.