2020 Volkswagen Passat Problems

2020 Volkswagen Passat SE 2.0L VIN: [XXX] Complaint Summary: I am reporting a persistent and unresolved fault involving the secondary air injection system (DTC P0491 – insufficient airflow) that has resulted in repeated, conflicting diagnoses across multiple repair facilities. This raises concerns about a potential systemic defect affecting this vehicle model. Detailed Description: The issue began prior to March 2025 while the vehicle was still under warranty. The vehicle displayed a Check Engine Light associated with diagnostic trouble code P0491 (secondary air injection system insufficient airflow). On April 3, 2025, a repair facility diagnosed the issue as a failed secondary air injection pump and replaced the component. However, the Check Engine Light returned within 24 hours with the exact same fault code, indicating that the repair did not resolve the issue. A second independent diagnostic evaluation was performed later in April 2025. This inspection confirmed that: The secondary air injection pump was functioning correctly Airflow through the system was present Electrical controls and PCM commands were operating properly The fault was attributed instead to a mechanically stuck secondary air injection combination valve Despite this revised diagnosis, the issue has remained unresolved. As of 2026, a dealership evaluation has now attributed the same fault condition to a potential failure within the cylinder head assembly, indicating a significantly more serious underlying condition. Safety Concern: This issue involves the emissions and engine air management system and has resulted in: Persistent Check Engine Light Repeated failure of emissions-related components Conflicting and escalating repair diagnoses across multiple qualified service providers I am requesting that the National Highway Traffic Safety Administration review this issue for potential investigation into a systemic defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Oil pressure sensor fails. Causing high oil pressure. Causing the valve cover to be destroyed and the oil pan to leak. Draining the car oil.

Steering wheel controls stopped working, no horn either. Probably no airbag but haven't got into an accident. There was recall on the same part for the until 2018, but the new part I was going to install lists that if fits cars 2016-2022 Part # 5K0-953-569-BC Recall from VW. Number: VWP-18-11, Will replace part for my fiance,

Error message alerted to maintenance needed and the air bag light has turned on and remained on. Also said message that front assist inls unavailable.

Steering wheel controls stopped working, no horn either. Probably no airbag but haven't got into an accident. There was recall on the same part for the until 2018, but the new part I was going to install lists that if fits cars 2016-2022 Part # 5K0-953-569-BC Recall from VW. Number: VWP-18-11, Will replace part for my fiance,

Error message alerted to maintenance needed and the air bag light has turned on and remained on. Also said message that front assist inls unavailable.

Steering wheel controls stopped working, no horn either. Probably no airbag but haven't got into an accident. There was recall on the same part for the until 2018, but the new part I was going to install lists that if fits cars 2016-2022 Part # 5K0-953-569-BC Recall from VW. Number: VWP-18-11, Will replace part for my fiance,

My clock spring isn’t working after having my vehicle for barely a year. My air bag light is currently on. I can’t use my horn nor use any of the controls on my steering wheel. I’ve paid already 800 plus on previous car issues such as my harness hose. I’m still awaiting reimbursement. Further review and assistance needed.

THE BREAKS IS VERY WEAK I WAS GOING TO HIT THE CAR AT THE FRONT OF ME WITH 1 INCH ! IT TOOK THE CAR LIKE 4 SECONDS TO STOP NOT SURE WAS IT JUST THE BREAKS OR THE BREAKS AND TIRES , THE CAR KEPT MOVING AFTER PRESSING THE BREAKS HARD ENOUGH , I WAS SHAKING SINCE I JUST GOT THE CAR 4 DAYS AGO !

I WAS DRIVING DOWN THE HIGHWAY SOUTH SHORE IN RANDOLPH MA STOUGHTON EXITS AND I HEARD A POP IN MY DRIVER SIDE REAR TIRE AND WHEN I PULLED OVER I CHECKED MY TIRE AND MY TIRE WAS COMPLETELY FLAT AND THERE WAS A HOLE APPROXIMATELY THE SIZE OF A HAND GUN BULLET HOLE IN MY RIM. I WAS GOING A LITTLE UNDER THE SPEED LIMIT DUE TO HAVING A 3 YEAR OLD IN THE VEHICLE IN THE FAR RIGHT SLOW LANE. THE FOLLOWING MORNING I WENT TO GET THE TIRE INSPECTED IT WAS CONFIRMED THERE WAS A HUGE PIECE OF GLASS IN MY TIRE.

HELLO MY DOUGHTER HAD A ACCIDENT CAR WAS TOTAL LOSS AND AIR BAGS DID NOT POP UP AND SEAT BELT WAS NOT TIGHT ENOUGH

Car wasn’t pulling up the road the epc light came on had to have my vehicle rolled to the next dealer which was 36 miles from where I was. I was traveling from grapevine tx and it start acting up in Huntsville tx. Came out of pocket 1085.00 and that was with a discount for the fuel injector #3 My warranty expired 3000 miles ago. I am the first owner on my vehicle.

My clock spring isn’t working after having my vehicle for barely a year. My air bag light is currently on. I can’t use my horn nor use any of the controls on my steering wheel. I’ve paid already 800 plus on previous car issues such as my harness hose. I’m still awaiting reimbursement. Further review and assistance needed.