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For the last six months plus, while driving at any speed or any gear, random power losses/misfires for one or two seconds, with no pattern sometimes it does not do it for days and sometimes does it three times in a fourteen mile journey, with rev counter dropping and returning to normal again. Sometimes when accelerating from a stand still at a traffic light when I move off, the car seems to do what I can only describe as a huge misfire, I feel a large thud from the engine and the vehicle jerks forward violently then acts normal again so I can drive. Vehicle has had a minor Audi service March 2017b (also full Audi service history). 29thApril I fitted a brand new original Audi original part fuel filter. It seemed to improve things but.... I still see the random power loss/miss fires stutter. Straight after fuel filter change vehicle put on a computer, codes came up P0087 and P1093. (Re computer codes picture attached)Reference code P0087 I googled results; https://www.obd-codes.com/p0087Potential causes of a P0087 trouble code may include: Weak fuel pump, clogged filter or screen, restricted fuel supply line Faulty fuel pump driver module Faulty fuel pressure sensor.Reference code P1093; http://wiki.ross-tech.com/wiki/index.php/17501/P1093/004243P1093 - Bank 1; Fuel Measuring System 2: MalfunctionPossible SymptomsPower LossMisfire(s)StallingPossible CausesFuel Pressure insufficient/exceed/fluctuatingFuel Pump (High Pressure System) faultyFuel Pressure Regulator Valve (N276) faultyPossible SolutionsCheck Fuel Pressure (on FSI engines High and Low Fuel Pressure System)Check Fuel Pump (High Pressure System)Check Fuel Pressure Regulator Valve (N276)Check Fuel Filter and Filter in Fuel Pump CasingSpecial NotesWhen found in 2.0l TFSI<http://wiki.ross-tech.com/wiki/index.php/2.0l_TFSI_(AXX/BGB/BPJ/BPY/BWA)>: * Check Fuel Pressure<http://wiki.ross-tech.com/wiki/index.php/2.0l_TFSI_(AXX/BGB/BPJ/BPY/BWA)#Checking_Fuel_Pressure> * Check TSB/TPI 2008753 (Rest of World), incompatibility between Fuel Pressure Regulator Valve (N276) and ECU software. * When found in conjunction with Misfires and Lean fault codes, check RVUTB: 01-09-03 or 2018919 (NAR only) 2.0T (BPY), for updated Crankcase Breather Valve * If the breather valve is faulty, full engine vacuum is typically found when removing the oil cap at idleMaybe possibly need a new breather valve, high pressure fuel pump/cam follower, or fuel pressure sensor. I've booked my vehicle to go to Audi specialist Les Paul's for first time and I hope they can fix issue as quick as possible.

Hi All, Has anyone had the following fault code before? 18112/P1704 (Relates to kickdown switch) Any further advise/experience to repair the fault would be appreciated. Car drives great as normal, however engine management light is on. A4 B9 3.0 V6 TDI Quattro (Auto)