2012 Audi A6: check engine light

Filed Sep 19, 2023 · Fuel system · 102,000 miles · CA

The contact owns a 2012 Audi A6. The contact stated while pulling out of the driveway, he smelled an abnormal fuel odor. The contact stated that the fuel odor became stronger while driving 65 MPH. There was no warning light illuminated. The contact stated that he pulled into a parking lot and opened the hood. The contact stated that he noticed that the fuel odor was coming from the engine. The vehicle was towed to an independent mechanic, where the check engine warning light illuminated. The mechanic determined that the check engine warning light had illuminated due to low pressure on the fuel rail, and the contact was informed that the supercharger needed to be removed for a more thorough inspection of the vehicle. The dealer was notified of the failure and informed the contact that the VIN was not included in a recall. The vehicle was not diagnosed nor repaired. The manufacturer was notified of the failure and informed the contact that the VIN was not included in the federal safety agency Campaign Number: 15V019000 (Fuel System, Gasoline). The manufacturer referred the contact to the federal safety agency Hotline for assistance. The failure mileage was approximately 102,000.

Filed Aug 17, 2019 · Transmission · 63,000 miles · CT

I just had check engine light which aperantly is a bad mechatronic device. Thank god nothing bad happened during driving, however when I talked to audi corporate and was told it was not acommon problem and they dont want to fix it. The car is 60k and always was taken care in dealership shops, on time. Used only 30 miles a day and always kept indorr both at my work and at home. When reading online about this problem I learnt that this is a common problem, and audi apparently not trying to cover or solve it. I am attaching description of the problem from a website (https://www.ecutesting.com/common-faults/audi/audi-s-tronic-0b5-gearbox-mechatronic-problem/) "this s-tronic transmission unit fitted to high performance audi's, with the 0b5 dl501 direct shift gearbox (dsg), is a very common failing mechatronic control unit. Internal component breakdown of the s-tronic mechatronic control unit will cause a multitude of symptoms on the vehicle beginning with the illumination of the epc (electronic power control) and prnds warning lights. The running symptoms that a fault within this mechatronic...as the s-tronic/0b5 gearbox mechatronics failure advances, these symptoms progress further into critical transmission failure: sticking in gear, deactivation of half of the gears, no reverse or gears above first. Typically, when dealing with these audi s-tronic gearbox problems, main dealerships and specialists will seek to purchase an expensive replacement or repair kit direct from the manufacturer, which will also incur coding fees. The glaring problem with this method is that the manufacturer of this mechatronic control unit has not yet resolved the root cause of failure at factory level, meaning that all replacements and repair kit components still have the underlying defects that will cause malfunction, usually outside the short one-year manufacturer warranty."

Filed Feb 4, 2018 · Electrical · 75,410 miles · NJ

My mil ( malfunction indicator lamp ) came on, in my audi a6 2012 on 1/21/18. I made an appointment with my audi dealership on 1/31/18. I was informed that my trans coolant valve was leaking into a wiring harness. They replaced my n509 valve and wiring connector. I found a technical service bulletin regarding this problem in my car as well as other audi models. There was a recall for this in audi a8 2010-2013. ( I have included these in the files that I have uploaded.) the affected a8 vehicles have a coolant valve leak allowing coolant to enter the engine control module causing a loss of power or the engine to stall. A vehicle stall increases the risk of a crash. I had my car repaired as my wife drives this car and I certainly did not want the car to stall and possibly have a crash. It seems to me that the audi a6 2012 should also be included in this recall. If any additional information is needed, please contact me.

Filed Dec 17, 2015 · Electrical, Engine · 58,000 miles · CA

O-ring failure in 2012 a6 3.0 caused the transmission to internally leak fluid causing the electonic system to go bad. All of the following lights came on when issue started. Check engine light, gearbox, mil trac control, mil epc, light airbag mil hi-speed cooling fan mil tire pressure warning light the transmission would not shift, major lack of power to engine. Parking brake would also activate by itself. Instrument panel light up like a x-mas, when I pulled over the car shut off and would not turn back on.

Filed May 24, 2015 · Driver assistance, Electrical · 62,000 miles · CA

O-ring failure in 2012 a6 3.0 caused the transmission to internally leak fluid causing the electonic system to go bad. All of the following lights came on when issue started. Check engine light gearbox mil trac control mil epc light airbag mil hi-speed cooling fan mil tire pressure warning light the transmission would not shift, major lack of power to engine. Parking brake would also activate by itself.

Filed Dec 2, 2014 · Electrical · 27,000 miles · NY

Tl* the contact owns a 2012 audi a6. While driving 5 MPH, the engine stalled and the check engine warning indicator illuminated. The vehicle was taken to the dealer who stated that the alternator failed. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 27,000.

Filed Aug 2, 2012 · Engine · 41 miles · NY

Tl* the contact owns a 2012 audi a6. The contact was driving 45 MPH when she noticed that the check engine warning light was illuminated on the instrument panel. The vehicle was taken to the dealer for diagnosis where the dealer stated that they needed to replace the transmission oil. The vehicle was repaired but the failure continued. The manufacturer was contacted and stated that they would look into the issue. The failure mileage was 41 and the current mileage was 44.