20 Most Recent 2004 Audi TT - Page 8 Questions & Answers

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.

Its getting ready for christmas ,

Whenever this warning light or any other stays on in the dash it is indicating that the systems control module (or the system sensor in the case of lights like low oil pressure, door open indicators etc.) has detected a fault, it then disables the system (this applies to ABS,TCS, TCM, SRS, TPMS and BCM faults and others) as long as the light is on. You must now have the dealer hook up a special electronic diagnostic tool and "scan" the system for the fault code that is stored for the problem(s)

Legend of Abbreviations. ABS Anti-lock brake system. TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module. TPMS Tire Pressure Monitor System

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