2020 Hyundai Sonata · Fuel system
Fuel leak and fire risk
A damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components, melting the tank.
What the reviewed source says
Start with the documented condition, not a parts guess.
NHTSA campaign 25V796000 includes certain 2020 to 2023 Hyundai Sonata vehicles. Hyundai Motor America (Hyundai) is recalling certain 2020-2023 Sonata vehicles. A damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components, melting the tank. A melted fuel tank can leak, increasing the risk of a fire.
Words owners may use
Does this match the moment?
Symptoms in the pattern
- A fuel odour, visible leak or warning light may be present, although some vehicles show no warning
- An open campaign appears when the complete VIN is checked
- Some recalled vehicles may show no advance warning before the component fails
Vehicles and scope
- 2020 to 2023 Hyundai Sonata
- NHTSA campaign 25V796000
- The manufacturer filing lists 85,043 potentially affected units across the complete campaign.
- VIN eligibility determines whether this recall applies to an individual vehicle
Manufacturer position
What the official procedure directs
Dealers will inspect and replace the check valve. The fuel tank assembly will be inspected for damage and replaced if necessary. Additionally, dealers will inspect and update the engine control unit software.
Safety recall eligibility is based on the VIN and campaign scope, not ordinary warranty mileage. Check the complete VIN even when the vehicle is outside its original warranty.
Original evidence
Open the documents behind this page.
Repair paths and safe checks
Separate the diagnosis from the action.
Use the official recall remedy
Dealers will inspect and replace the check valve. The fuel tank assembly will be inspected for damage and replaced if necessary. Additionally, dealers will inspect and update the engine control unit software.
Do not buy parts from the campaign description alone. VIN scope, superseded remedies and parts availability can change.
What owners reported
Did this repair fix the same symptom on your car?
Loading owner reports…
Check the complete VIN before arranging work
Enter the 17-character VIN in NHTSA's recall lookup and ask the manufacturer or an authorised dealer to confirm whether the campaign is open for this vehicle.
A year, make and model match does not prove that every vehicle is included. The VIN result controls eligibility.
What owners reported
Did this repair fix the same symptom on your car?
Loading owner reports…
Useful before authorizing work
Read the method beside the problem
These guides explain the safety and evidence checks that apply to this problem file.
Check recalls by VIN
A VIN search checks the displayed NHTSA records for an unrepaired safety recall associated with one vehicle. A model search shows only the wider campaign population.
Read guide ↗When a car is unsafe
A warning light does not always mean the same thing, but weak brakes or smoke leave little room for experimentation. Damaged tires and certain recall instructions can do the same.
Read guide ↗Why symptoms overlap
“It makes a weird noise” is useful human language. Diagnosis begins when that language is tied to the exact vehicle and its operating conditions.
Read guide ↗More for this model
Other reviewed Hyundai Sonata conditions
2017 to 2018 Hyundai Sonata · Body & structure
Door may open or fail to latch
The trunk latch may become damaged, preventing the opening of the trunk from the inside.
2026 Hyundai Sonata · Electrical & software
Electrical or software fault may disable vehicle functions
Due to a software error, the instrument panel display may fail.
2015 to 2017 Hyundai Sonata · Electrical & software
Electrical or software fault may disable vehicle functions
The Smart Junction Box (SJB) software logic may not properly interpret the signals received from the multifunction switch, which could cause the turn signal to activate in the opposite direction of what the driver intended.