Audi A3 check engine light comes on

Filed Oct 12, 2026 · GA

I was driving my vehicle on the [XXX] like normal and suddenly my car stopped accelerating at 70 MPH and displayed a message stating to stop vehicle, transmission malfunction. There were 2 cars that almost hit me while I was trying to get over to the side of the road due to the car barely having any power. The car also displayed a checked engine light and an eps warning. This all happened within one minute. I towed It to Rocco European garage in [XXX] where It was concluded that solenoid shift for the transmission has failed and is stuck. I was told that now the car isn’t technically drivable any longer distance and should have It towed again until it’s fixed to prevent further damage. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 8, 2026 · Fuel system · 94,242 miles · TN

The contact owns a 2015 Audi A3. The contact stated that the dealer had previously repaired the vehicle under the federal safety agency Campaign Number: 24V110000 (Fuel System, Gasoline); however, the vehicle was not driven until a year later after the recall repair due to medical issues. The contact stated that while refueling the vehicle, fuel was backing up in the fuel filler neck. Additionally, while driving at an undisclosed speed, the vehicle stalled and failed to exceed 30 MPH. There was a fuel odor coming from the vehicle, and the fuel and check engine warning lights were illuminated. A family friend diagnosed the vehicle and determined that the suction jet pump had failed. The dealer was made aware of the failure. The manufacturer was notified of the failure by phone and email. The failure mileage was approximately 94,242.

Filed Jun 18, 2026 · Engine · FL

Coolant Water Pump and Thermostat -- Coolant temperature indicator gauge runs from normal to high after about 10-15 miles drive. Coolant levels are good and no signs of leak. Engine light is activated along with warning messages. Engine Warning: Drive System Malfunction. Please call for service. The vehicle goes into "Limp Mode" and warns to not exceed 4,000 rpm. I am in the process of having this repaired by a mechanic. FYI--- There was a previous RECALL for this in 2017. Clearly the problem still occurs.

Filed Mar 23, 2026 · Transmission · GA

On March 22, 2026, my Check Engine light came on while driving my 2022 Audi A3. Prior to this, I had been noticing a slight jerk when accelerating from a stop. Because Audi dealerships charge approximately $250 just to read diagnostic codes, I went to Discount Auto Parts, where they retrieved code P27F500 — indicating the gear shift lock solenoid is stuck in the open position. I then contacted my Audi dealership and asked directly whether this required a software update or if the gear selector was physically failing. They refused to give me a straight answer. I separately spoke with an Audi service technician who confirmed that the 2022 Audi A3 is well known to have this exact issue. My own research confirmed that this defect is widespread across both Audi and Volkswagen vehicles sharing the same platform. My vehicle is only 3 years old with no history of abuse or neglect. Repair estimates for this known manufacturer defect range from $1,500 to $2,000, which is unacceptable for a defect that appears to be a manufacturing issue, not owner caused damage. I am requesting that the federal safety agency investigate this as a potential safety defect and consider requiring Audi to issue a recall or provide repairs at no cost to affected owners.

Filed Mar 16, 2026 · Engine · 128,000 miles · WI

The contact owns a 2013 Audi A3. The contact stated that while driving at an undisclosed speed, the vehicle unexpectedly went into LIMP Mode with the check engine warning light illuminated. The contact stated that the glow plugs failed to function and became inoperable. The vehicle was taken to several dealers, where it was diagnosed with exhaust system failure. The contact was informed that the exhaust system needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 128,000.

Filed Dec 9, 2025 · Transmission · 34,500 miles · CA

The contact owns a 2019 Audi A3. The contact stated that while driving 65 MPH for a 50-mile trip, the message "Transmission Failure" displayed, and the check engine warning light illuminated. The transmission then inadvertently switched from automatic to manual transmission mode and became stuck in second gear. Additionally, the vehicle jerked and decelerated to 35 MPH while driving. The contact activated the hazard lights before pulling over to the right shoulder to turn off the vehicle. The vehicle was restarted, but the failure persisted. The contact stated that the vehicle was consuming an excessive amount of fuel very quickly. The contact was able to drive to the destination. The vehicle was taken to an independent mechanic, who retrieved DTC: P173500 (Electrical Malfunction with the Position Sensor for Clutch 1 in the Transmission). The vehicle was then taken to the dealer, but no cause for the failure was found. The contact then drove the vehicle for a long distance at high speeds and was able to duplicate the failure. The vehicle was taken back to the dealer, who determined that the mechatronic hardware, DSG transmission cover, gasket, and fluid needed to be replaced. The vehicle was not repaired. The contact related the failure to Technical Service Bulletin: 2058504/1 (Transmission malfunction, DTC P173500 and/or P173600 stored in the TCM). The manufacturer was made aware of the failure, but informed the contact that the VIN was not included in the Technical Service Bulletin. The failure mileage was approximately 34,500.

Filed Dec 7, 2025 · Engine, Fuel system · CO · 1 injury

In August 2025, my 2017 Audi A3 (VIN [XXX] ) experienced repeated stalling, strong gasoline odors inside the cabin, and a check engine light immediately after Audi completed recall-related service. The safety issue was later confirmed by the dealership to be caused by a failed suction jet pump (the federal safety agency Recall 24V110), which allowed fuel to enter the EVAP system and leak into the rear seat area and cabin. The leak was so severe that the rear seat and flooring had to be replaced due to fuel saturation. Before the problem was properly identified, I was repeatedly told the issue was “just the gas cap,” despite reporting fuel smell, rapid fuel loss after filling the tank, and the check engine light. During this time, I unknowingly drove a vehicle with a significant fire hazard. The cabin fumes caused physical symptoms and unsafe driving conditions. I was not notified of this recall at the time I purchased the vehicle in March 2022, nor was I notified of a second recall affecting the passenger occupant detection system (69BY), despite having purchased a one-year maintenance warranty. I only became aware of the recalls after experiencing the hazardous symptoms described above. The problem was confirmed and reproduced by the Audi dealership. Fuel odor, fuel loss, and warning lights first appeared within 24 hours after the initial service visit, and the safety defect was later linked to the recall-related component failure. This defect presented a serious risk of fire and exposure to gasoline fumes to both myself and other road users. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 13, 2025 · Electrical, Transmission · FL

My 2015 Audi A3 1.8T is experiencing the exact same failure symptoms and operational hazards as those described in Audi’s own Warranty Extension U49, which covers certain 2017 and 2018 Audi A3 and A3 Cabriolet 2.0 TFSI models. According to Audi’s bulletin, vehicles with faulty mechatronic units are eligible for replacement under an extended warranty due to safety concerns — sudden loss of drive, vehicle being stuck in neutral, and PRNDS flashing while in traffic. My vehicle is now exhibiting these identical symptoms: (1) Sudden disengagement of all gears while driving when it tries to go to fourth gear. At this point, there is a (2) flashing PRNDS indicator and “Reverse Gear Not Available” message. (3) Loss of ability to accelerate in moving traffic, requiring emergency maneuvers, and halting traffic. (4) Temporary restoration of function after shutting off and restarting the engine, only for the problem to happen again. (5) Check Engine Light. This is a serious safety hazard that puts both the driver and other road users at risk. The only reason my vehicle is excluded from the coverage appears to be its model year (2015), despite the fact that the mechatronic unit and failure mode are identical to the covered 2017–2018 vehicles. I believe Audi overlooked this issue in other year models and, as such, I respectfully request that the federal safety agency investigate why Audi is limiting this safety-related repair to only certain VIN ranges and model years, when vehicles just a couple of years older are exhibiting the exact same dangerous defect. A sudden loss of propulsion at highway speeds is a serious risk that warrants broader manufacturer accountability. The company should fix this issue as soon as possible.

Filed Jun 20, 2025 · Fuel system · TX

My 2018 Audi A3 began having fuel-related issues after receiving the recall service for campaign 20YF (Suction Jet Pump Seal) at an authorized Audi dealership. I first took the vehicle to an independent mechanic, because the check engine light came on, and there was a strong fuel smell. Most concerning, fuel leaked heavily from the front part of the engine, posing an extreme fire risk. who performed a diagnostic and found the following faults: Cold start fuel pressure performance fault Fuel rail/system pressure too low Fuel rail pump control valve stuck open Injector 4 leaking fuel The mechanic replaced injector 4 and installed new seals. However, the fuel leak continued, so I decided to take the car back to the Audi dealership, since they had previously performed recall work on the vehicle. I was concerned that the fuel leak might be related to the recall. The dealership told me the issue was not related to the recall and required a new in-depth diagnostic, which I would have to pay for. I accepted, and they charged me $876 for a deeper inspection. After their diagnosis, they said the only issue was that the previous mechanic had installed the seals incorrectly. They replaced the seals again and charged me for the repair. When I picked up the vehicle, the check engine light was still on. I immediately reported it to the dealership, and they asked me to return the car, saying the light should not be on. Once I brought it back, they told me it was now a new issue unrelated to their work, and that I would need to pay for another diagnostic. I believe this ongoing problem is directly related to the fuel system recall or to the dealership’s repair, and I feel that I am being charged repeatedly for an issue that was never fully resolved. Despite my efforts to follow Audi’s process, I am being held financially responsible for what I believe is a safety-related failure that began after the recall was performed.

Filed Feb 16, 2025 · Electrical · PA

If the car is not driven for 20 minutes per day and the car sits for any length of time the check engine light comes on. The dealership advises it is the 12v battery is run down. According the Audi USA and the service order that the car is operating as designed.