20 Most Recent 2008 Audi TT Coupe - Page 5 Questions & Answers

I will give you what the codes mean and you can then work out what to replace. code p0171 refers to system too lean--bank 1===causes intake / exhaust leak---AIR system---MAF/VAF sensor---fuel pressure/pump---injector/s---HO2s code p0201 refers to injector 1--circuit malfunction===causes--- wiring--injector ---ECM code p0202 refers to injector 2 --circuit malfunction===causes --wiring---injector--ECM code p0203efers to injector 3 --circuit malfunction===causes---wiring--- injector --ECM code p0204 refers to injector 4 --circuit malfunction===causes ---wiring ---injector ---ECM code po321 refers to crank shaft position (CKP) sensor/engine speed (RPM) sensor---range / performance problem===causes---air gap---metal particle contamination---insecure sensor /rotor --wiring---CKP/RPM sensor.

sounds like you need an electrical specialist, which I admit I am not..most of my electrical is on older cars/trucks..these new coputer cars baffle me unless my dumb luck just hits right..good luck..

The hazard switches on some Audi models includes a relay for the turn signals. This was true on my Allroad and A6, but I haven't needed to replace on my TT yet. Part is easy to replace, but about 50 to 75 dollars.

Do you have an auto transmission? If so, Audi / VW use a fluid that matches that description. Also, oil with coolant can take that color too. Where under the car does it appear? Get under there and look to see if you can trace to the source. It will require removal of the sound deadening panel that use a special star shape bit. Because the car is so low, you will need to raise the car with ramps. Do not use a jack to crawl under, that is a major safety risk unless supported with jack stands!

Stop being so cheap!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Take it to an agent before you find out how much it is for bent valves or just sell the car on OLX and buy another on OLX!!!!!!!!!!!!!!!!!!!!!!!!!!!

Check with dealership for manual or instructions on how to replace the canvas.

Check with Audi dealership.

try this topic with www.aa1car.com and fix it. see the diagram attached, for leaking in the system, is the firs stepGod bless you

Check for blockage in filler pipe (insects etc- if that applies)Check for Evap Codes & the possibility of a Bad Evap VentSolenoid- preventing you from filling the fuel tank

I suspect you and the shop have checked the fuse panel and replaced any bad fuses. If you can get access to a VAG COM it may tell you which item in the group is failing and you'll know what to start replacing first.You can use: http://vagtoolfinder.com/ to find someone nearby you with a VAG tool you can borrow, or consider purchasing one, they're really handy for these cars

a few things befor i get in to the codes, i dont know how you retreved the troble codes but it looks like you used a generic code reader, i say this because you have a lot of no-codes that is to say the many of the codes you listed are not codes that this car has the abbilty ti set, we see this a lot with the generic code readers, the audi does not work well with the generic readers, the firs thing you need to do is clear all codes then drive the car and retest for codes so then we will know which codes are hard codes this will help in the diagnostic of the car. but to get yoiu started out of all the codes you gave me there is only 2 that are codes for this system.

code P0102 mass air flow sensor low reading, and be caused by an air leak in the hose betwine the mass are flow sensor and the intake manafold.

code P0154 O2 sensor bank 2 sensor 1 no actavity most likely cause is a bad sensor, i would replace all O2 sensors if one has failed the others wont be far behind.

P0031, P0037, P0051, P0057, P0141, P0161, P0414, P0445, P2257, P02401 this codes do not exist for this car they are what we call gohst codes we see this happen when useing the generic readers.

let me know if there is any thing else you need.