While driving yesterday, the MMI reset and included the dashboard. The dash completely froze for a couple minutes(including the speedometer), and then the whole system blacked out and restarted. There has been a check engine light on since I got the car in December. Havent been able to get a service appointment with a loaner. Also since new, adaptive cruise control works intermittently with a warning that a door is open(when all doors are completely closed).
Audi A6 check engine light comes on
78 of the 1,663 owner complaints about the Audi A6 describe check engine light, most of them for the 2003 model year.
- owner complaints
- 78
- worst model year
- 2003
- typical repair cost reported
- $3,300
- typical mileage
- 77,000
Is there a fix? There are 4 recalls for this area of the car. See below
By model year
Often reported together
Stalling 6Misfire 6Fire or smoke 6Overheating 5Loss of power 5Fuel smell 4Fuel leak 4ABS 4
Trouble codes mentioned
P1423 1P1411 1P0741 1P0456 1
What owners say
I own a 2016 Audi A6 3.0T. After filling the fuel tank completely, the vehicle only traveled approximately 190–200 miles before the fuel gauge indicated empty. This represents a sudden and significant loss of fuel range compared to normal operation. There are no warning lights, check engine lights, fuel smells, visible leaks, rough idle, or abnormal noises. The vehicle operates normally otherwise. The issue appears to involve excessive fuel consumption or incorrect fuel management without any driver warning. This condition poses a potential safety risk because the vehicle may unexpectedly run out of fuel while driving, which could result in loss of power in traffic or on highways, increasing the risk of an accident. The issue has been observed repeatedly after refueling. At the time of this report, the vehicle has not yet been inspected by a dealer or independent repair facility, but diagnostic evaluation is planned. Based on owner research and symptoms, the issue may be related to a fuel system, engine management, or emissions-related component malfunction that does not trigger a warning indicator. No prior warning messages or lamps were displayed before or during the occurrence.
The contact owns a 2014 Audi A6. The contact stated while driving at approximately 70 MPH, the accelerator pedal was depressed; however, the vehicle stalled. The Electronic Power Control System and the Check Engine warning lights were illuminated. The vehicle was towed to a dealer where it was diagnosed that there was a fuel leak and that the fuel injector, the coolant hose, and the water pump needed to be replaced. The contact researched and was made aware of the federal safety agency Campaign Number: 17V781000 (Fuel System, Gasoline); however, the VIN was not included. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline to report the failure. The failure mileage was 181,615.
I took the vehicle into a repair shop because the check engine light is on. I was advised that the water pump is leaking and it needs to be replaced along with the thermostat. The turbo charger assembly also needs to be replaced. Both of these items appear to be deficient and were listed under recent recalls on similar Audi vehicles and this VIN was not included in either recall. However, it appears to be a similar concern and should be resolved by the Manufacturer.
The car couldn't start and stopped abruptly on the way through bunches of errors on the dashboard with check engine light and steering was firm and could not lock the Car or open the door Here are the warning list for 2019 Audi A6: Electrical system malfunction Electrical system malfunction Parking aid malfunction Transmission malfunction Rear spoiler malfunction Drive system: malfunction Traction control malfunction Tire pressure monitoring system malfunction Parking brake malfunction Automatic start/stop system malfunction Start/stop system malfunction
The contact owns a 2014 Audi A6. The contact stated that he became aware that the vehicle was experiencing abnormal oil consumption. An unknown dealer was notified of the failure, but an oil consumption test was not performed on the vehicle. Additionally, the contact stated while driving 65-68 MPH, the EPC and the check engine warning lights were illuminated, and the vehicle started shuddering. The contact was able to veer to the side of the road. The vehicle was towed to the residence. The vehicle was then towed to an independent mechanic, where it was diagnosed that there was no compression in cylinder #6. The vehicle was then towed to another independent mechanic, who determined that the engine needed to be rebuilt. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the VIN was not under recall. The failure mileage was approximately 149,087.
The contact owns a 2018 Audi A6. The contact stated that the EPC and engine warning lights were illuminated. The vehicle was taken to an independent mechanic and the contact was notified of an unstated recall. The contact called the local dealer and was informed that the repair was not covered under recall. The vehicle was not diagnosed or repaired. The manufacturer was contacted, and the contact was informed about a buyback, but no additional assistance was provided. The failure mileage was approximately 52,000.
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.
The contact owns a 2016 Audi A6. The contact stated that while refueling, the gas nozzle would frequently stop, causing gasoline to leak from the vehicle. The vehicle was taken to a dealer where it was discovered that the fuel tank sensor needed to be moved to another location on the vehicle. The contact was provided an estimate for the repair; however, the contact declined to seek a second opinion. The contact was assured by the dealer that the vehicle was safe to be driven. A few days after leaving the dealer, the vehicle stalled while driving at a slow speed, with the check engine warning light illuminated. Due to the failure, the vehicle was towed back to the dealer who discovered that fuel had filled up in the evaporation canister sensor which caused the fuel tank and the fuel pump to become defective. The manufacturer was notified of the failure but informed him that his vehicle was not under recall or warranty. The vehicle had yet to be repaired and remained in the possession of the dealer. The failure mileage was approximately 48,000.
While I was driving, the vehicle gave an electrical system malfunction warning. When I stopped and restarted the vehicle, the car reluctantly started with delays and a check engine light. I had to tow the car to the dealership. Upon inspection, they determined it is a generator issue, much like many other owners of 2019+ model year of Audi's. They do not have an ETA on the replacement part, and thus the car will be out of commission for weeks to months. I am lucky, as many other people who have experienced this problem have had their car completely die on them in the middle of driving. This is a potentially dangerous safety hazard, and an enormous inconvenience, as any Audi owner with this generator issue will not have their car for weeks to months.
Related recalls
Engine and engine cooling: engine: engine control module (ecu/ECM)
- What is wrong
- Volkswagen Group of America, Inc. (Audi) is recalling certain 2022 Audi A6 Sedan, A4 Sedan, Q5, and Q5 Sportback vehicles. The semiconductor inside the engine control unit may short-circuit and cause an engine stall.
- Risk
- An engine stall can increase the risk of a crash.
- Remedy
- Dealers will replace the engine control unit, free of charge. Owner notification letters were mailed July 18, 2022. Owners may contact Audi customer service at 1‑800‑253‑2834. Audi's number for this recall is 24iH.
Recall number 22V368000 · Recall details
Engine and engine cooling: cooling system
- What is wrong
- Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2017 Audi A5 Cabriolet, A5 Sedan and Audi Q5 vehicles, 2012-2015 Audi A6 vehicles and 2013-2016 Audi A4 Sedan and A4 allroad vehicles. These vehicles, equipped with 2.0l Turbo FSI engines, have an electric coolant pump that can either become blocked with debris from the cooling system causing it to overheat or can short-circuit from moisture within the pump.
- Risk
- A blocked pump or a short-circuited pump can increase the risk of a fire.
- Remedy
- Audi will notify owners, and dealers will replace the pumps, free of charge. The recall began September 14, 2018. Owners may contact Audi customer service at 1‑800‑253‑2834. Audi's number's for this recall is 19N3/19N4. Note: This recall is in additional to the coolant pump software update applied as a remedy under recall 17V002.
Recall number 18V229000 · Recall details
Engine and engine cooling: cooling system
- What is wrong
- Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2017 Audi A5, A5 Cabriolet and Q5 vehicles, 2013-2016 Audi Allroad and Audi A4 vehicles and 2012-2015 Audi A6 vehicles. These vehicles, equipped with 2.0l Turbo FSI engines, have an electric coolant pump that can be blocked with debris from the cooling system, resulting in the pump overheating.
- Risk
- If the coolant pump overheats, it can increase the risk of a fire.
- Remedy
- Audi will notify owners, and dealers will update the software so that the power supply to the coolant pump is deactivated if the pump becomes blocked with debris, free of charge. The recall is expected to begin February 20, 2017. Owners may contact Audi customer service at 1‑800‑253‑2834. Volkswagen's number for this recall is 19M1.
Recall number 17V002000 · Recall details
Engine and engine cooling: cooling system
- What is wrong
- Vehicle description: passenger vehicles. If the engine backfires during a cold-start, an air screen which is loosely seated in the air flow meter can become damaged.
- Risk
- Screen pieces could enter the intake air flow system and prevent the throttle plate from returning to its full idle position.
- Remedy
- Dealers will install a retaining ring to hold the air screen in place.
Recall number 98V134000 · Recall details
Questions about the Audi A6 check engine light
Why does the check engine light come on in the Audi A6?
Owners who report it most often also describe engine stalls while driving, misfire or rough idle and fire, smoke or burning smell, and the codes they mention most are P1423, P1411 and P0741.
Which Audi A6 years have check engine light problems?
The model years with the most reports are 2003 (10 complaints), 2002 (7 complaints) and 2012 (7 complaints).
How much does it cost to fix check engine light on the Audi A6?
Owners who mentioned a price put the repair at about $3,300 (median of 8 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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