Engine
1.6L 4-cyl
How to read this file. Complaint records are unverified owner submissions to the federal safety agency. Counts are raw, not adjusted for sales volume or vehicle age. Recall campaigns apply to the model; only a VIN check shows whether this car is affected or repaired. Parts shown are named by an editorial note or listed as a search directory; none is a diagnosis. Full methodology.
Fault profile
Complaint-component records on this vehicle, grouped by family. A complaint naming two systems counts once in each.
Complaints are owner-reported and not verified by the agency.
When it fails
The timing of this vehicle's reported failures, from the complaint file itself. A cluster tells you what to expect and when; it is shaped by reporting behavior as well as by the vehicle.
Vehicle age when the failure occurred
Years between the model year and the owner's reported failure date. Based on 134 of 134 complaints with a usable failure date.
Known issues
The component families with the most complaint records against this vehicle. Counts, crash and fire figures belong to the whole family, not to any single named issue. Parts listed are related system parts, not a diagnosis.
Engine & cooling
35 complaint records1 crash report
Owners filed 35 complaint records naming this system.
Parts
No specific part is named for this issue. Browse engine & cooling parts in the directory →
Fuel system
34 complaint records1 crash report
"Gas tank expansion and pcv melted. Car smells like gas when I was driving earlier, and my garage was flooded with the fumes of gasoline...."- one owner's federal complaint about this system; it may not describe the issue named above
Parts
No specific part is named for this issue. Browse fuel system parts in the directory →
Power train
25 complaint records
"Took vehicle in for transmission recall on June 12th. After picking up vehicle the vehicle it was shifting harshly. On the 17th my vehicle had a code come up that said to park it and contact the dealership ASAP. Transmission code P1C2D03...."- one owner's federal complaint about this system; it may not describe the issue named above
Parts
No specific part is named for this issue. Browse power train parts in the directory →
Federal defect investigations
Formal investigations opened by the federal safety agency into this vehicle. An investigation is the step between a complaint pattern and a recall; not every one results in one.
| Investigation | Status | Component | Subject |
|---|---|---|---|
| DP22003 opened Sep 2022 | closed Dec 2023 | Engine | Loss of Motive Power The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain... |
Recall campaigns
Safety-recall remedies are normally provided at no charge. Under US federal law the mandatory free remedy applies when the vehicle was no more than 15 years old at the time the defect was determined; manufacturers often cover older vehicles voluntarily. Canadian rules differ. Confirm eligibility with the manufacturer using the VIN. Each campaign number links to the federal record.
| Campaign | Component | Summary | Remedy |
|---|---|---|---|
| 25V796000 | Fuel System, Gasoline | 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. | Normally free |
| 22V746000 | Power Train | Hyundai Motor Company (Hyundai) is recalling certain 2021-2022 Santa Fe, Sonata, Veloster N, 2022 Santa Cruz, Elantra N, and Kona N vehicles. | Normally free |
| 21V00M000 | Visibility | Hyundai Motor America (Hyundai) is recalling certain 2020-2021 Santa Fe, 2021 Sonata, and Elantra vehicles. | Normally free |
| 21V524000 | Fuel System, Gasoline | Hyundai Motor America (Hyundai) is recalling certain 2021-2022 Santa Fe and Sonata vehicles equipped with 2.5L turbocharged engines. Fuel may leak at the pipe connection between the high-pressure fuel pump and fuel rail. | Normally free |
Transport Canada recalls
Recalls issued under Canadian law for this model year, from Transport Canada's Vehicle Recalls Database. Matched by model name, so a Canadian-market variant may appear here that was sold under another name in the US. Units are Canadian vehicles affected.
| Recall | System | Units (CA) | Summary |
|---|---|---|---|
| 2025637 2025-11-18 | Fuel System | 5,616 | Issue: On certain vehicles, the check valve for the purge control system could wear and cause the fuel tank to expand. As a result, the fuel tank could contact hot components and fuel could leak. |
| 2022568 2022-10-06 | Powertrain | 9,427 | Issue: On certain vehicles, a fault in the transmission oil pump can cause the vehicle to enter "fail-safe mode". When this happens, a programming error can cause a sudden loss of power to the wheels after 20-30 seconds. |
| 2021791 2021-12-27 | Structure | 1,893 | Issue: On certain vehicles, the windshield may not be properly attached. As a result, the glass can become loose and could separate from the vehicle in a crash. |
| 2021426 2021-07-09 | Fuel System | 2,285 | Issue: On certain vehicles, the connection between the high-pressure fuel pipe and fuel pump may not be properly sealed. As a result, a fuel leak could occur. Safety Risk: A fuel leak can create the risk of a fire. |
Service bulletins and warranty extensions
Manufacturer communications to dealers on file with the federal agency: repair instructions, service campaigns, and warranty extensions. A warranty extension means the manufacturer may pay for a repair the recall table does not cover.
| Bulletin | Type | Component | Summary |
|---|---|---|---|
| 26-AT-005H TSB Jun 2026 | Power Train | This bulletin provides information related to a Transmission Control Unit (TCU) software update for some vehicles equipped with an 8-speed wet dual clutch transmission (8WDCT). | |
| 26-EE-003H TSB Apr 2026 | Engine | Some vehicles may exhibit difficulty starting in cold weather. This bulletin provides the procedure to perform an inspection on the starter magnetic switch for potential freezing and, if necessary, replace the starter magnetic switch (solenoid) assembly. | |
| DTN DCS Apr 2026 | Air Bags | The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN), that have been identified in U.S. | |
| DTN DL Apr 2026 | Air Bags | The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN). | |
| 26-AT-001H TSB Mar 2026 | Power Train | Some Santa Cruz (NXT), Santa Fe (TMA, MX5A), and Sonata (DN8A) models may require replacement of the 8-speed wet dual clutch transmission (8WDCT) when the vehicle sets one of the high pressure electric oil pump (HP EOP) DTCs listed below. |
Show 55 more bulletins
| Bulletin | Type | Component | Summary |
|---|---|---|---|
| 26-AD-001H TSB Feb 2026 | Exterior Lighting | Some 2019MY and newer vehicles equipped with a front view camera may illuminate certain warning lights and trigger DTC C272246 fault code for the front camera. | |
| 26-EM-003H TSB Feb 2026 | Engine | Some Sonata (DN8, DN8A) vehicles may have DTCs P218100, P2181F0, and/or P2181F1 (Cooling System Performance) set in the Engine Control Module, resulting in an illuminated Check Engine warning lamp. | |
| 26-FL-001H TSB Jan 2026 | Fuel/Propulsion System | Some vehicles equipped with a 2.5L GDI Theta III engine (non-Turbo) may exhibit one or more misfire DTCs due to the GDI fuel injectors leaking internally. This may be caused by internal filter breakage in the injector. | |
| 25-BD-012H TSB Nov 2025 | Exterior Lighting | This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. | |
| 25-BE-020H TSB Sep 2025 | Electrical System | This bulletin provides information related to the changes introduced in the 2025 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system as described in this TSB. | |
| 25-AT-001H TSB May 2025 | Power Train | Certain Santa Fe (TMA) and Sonata (DN8/DN8A) vehicles equipped with 8-speed dual clutch transmissions (8DCT) may exhibit one of the DTCs listed below, related to the high pressure electric oil pump (HP EOP). | |
| 25-BE-002H TSB May 2025 | Electrical System | This bulletin provides information related to the changes introduced in the 2024 2nd Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. | |
| 25-01-024H-1 TSB May 2025 | SERVICE CAMPAIGN | Electrical System | Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. |
| 25-EE-002H Apr 2025 | Electrical System | Certain Sonata (DN8) and Sonata (DN8A) vehicles may experience issues with the air conditioning due to damaged wiring in the engine room junction box. | |
| 25-EE-002H TSB Apr 2025 | Electrical System | Certain Sonata (DN8) and Sonata (DN8A) vehicles may experience issues with the air conditioning due to damaged wiring in the engine room junction box. | |
| 25-01-024H EM Apr 2025 | SERVICE CAMPAIGN | Electrical System | Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon's communication network. |
| 25-01-024H TSB Mar 2025 | SERVICE CAMPAIGN | Electrical System | Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. |
| 25-FL-001H Jan 2025 | Fuel/Propulsion System | Some vehicles equipped with a 2.5L GDI Theta III engine (non-Turbo) may exhibit one or more misfire DTCs due to the GDI injectors leaking internally. This may be caused by internal filter breakage in the injector. | |
| 25-01-001H DBP Jan 2025 | SERVICE CAMPAIGN | Fuel/Propulsion System | Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have Diagnostic Trouble Code (DTC) P0451 (also known as DTC P14EE00) stored in the Electronic Control Unit (ECU). |
| 25-01-001H TSB Jan 2025 | SERVICE CAMPAIGN | Fuel/Propulsion System | Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have DTC P0451 stored in the ECU. Follow this bulletin to inspect the check valve, fuel pump cover and fuel tank, and update the ECU. |
| 9B1 OL Dec 2024 | SERVICE CAMPAIGN | Electrical System | The subject vehicles may have Diagnostic Trouble Code (DTC) P0451 stored in the ECU, which could cause the Check Engine Lamp to come on. |
| 24-01-020H TSB Nov 2024 | SERVICE CAMPAIGN | Fuel/Propulsion System | Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have DTC P0451 stored in the ECU. Follow this bulletin to inspect the check valve, fuel pump cover and fuel tank, and update the ECU. |
| 24-01-020H DBP Nov 2024 | SERVICE CAMPAIGN | Fuel/Propulsion System | Certain 2021-2023MY Sonata (DN8) and 2020-2022MY Sonata (DN8A) vehicles may have Diagnostic Trouble Code (DTC) P0451 stored in the Electronic Control Unit (ECU). |
| 24-EM-001H Jul 2024 | Engine | Certain 20-22MY Sonata (DN8a), 21-23MY Santa Fe (TMa), and 22-23MY Tucson (NX4a) vehicles may experience a warning lamp illumination for a diagnostic trouble code P2181 that is related to the Integrated Thermal Management Module (ITM). | |
| 24-BE-001H-1 Jul 2024 | Electrical System | Some vehicles equipped with the AVN 5th Gen Wide system may exhibit a condition where the radio app crashes frequently when entering radio mode and/or displays a message that reads “Uneven Road Ahead, Drive carefully” on the cluster along with a warning sound. | |
| 24-AT-002H Apr 2024 | Power Train | This TSB provides a procedure to diagnose and replace, if necessary, an automatic transmission with Incorrect Ratio DTC (transmission clutch slip in gear above limit) listed on Page 2. | |
| 24-FL-002H Feb 2024 | Engine And Engine Cooling | This bulletin provides the procedure to update the Engine Control Module (ECM) and/or the Transmission Control Module (TCM) for 2020-2023MY Sonata (DN8/DN8a) vehicles to improve operation of the Idle Stop and Go (ISG) system. | |
| 24-AT-001H Feb 2024 | Power Train | This bulletin provides the procedure for updating the automatic transmission TCU and ECU software (Santa Fe ONLY) to improve shift quality, judder with ISG enabled and hesitation when accelerating. | |
| 24-BD-001H Feb 2024 | Visibility/Wiper | This bulletin contains information about the proper removal of the windshield wiper blade protective cover on all models. If the protective cover is not removed correctly, there is a possibility of the rubber insert and rail spring becoming partially separated on the inner side... | |
| 24-BE-001H Jan 2024 | Electrical System | Some vehicles equipped with the AVN 5th Gen Wide system may exhibit a condition where the radio app crashes frequently when entering radio mode and/or displays a message that reads âUneven Road Ahead, Drive carefullyâ on the cluster along with a warning sound. | |
| 23-AT-006H-2 Nov 2023 | Power Train | This TSB provides information to diagnose the push button shifter operation. | |
| 23-EM-005H Oct 2023 | Engine And Engine Cooling | This bulletin provides important checkpoint guidelines when performing engine oil and filter change services. | |
| 23-EE-010H Sep 2023 | Engine And Engine Cooling | This bulletin is issued to provide the extended battery diagnosis procedure using GDS-M. This battery diagnosis function displays the various battery-related faults such as: ⢠Internal short circuit ⢠Battery deterioration ⢠Malfunction of electronic parts ⢠Insufficient... | |
| 23-AT-008H-1 Sep 2023 | Power Train | If you are servicing an 8-speed front-wheel-drive vehicle equipped with automatic transaxle with one or more of the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition. | |
| 23-AT-012H Aug 2023 | Power Train | This bulletin provides information related to a Transmission Control Unit (TCU) software update for certain vehicles equipped with an 8-speed wet dual clutch transmissions (8WDCT) that improves the touch point learning variation. | |
| 23-AT-011H Aug 2023 | Power Train | This bulletin outlines changes to the service procedure regarding the replacement of 8-speed wet dual clutch transmissions (8WDCT) and associated transmission control unit (TCU). These changes only apply to vehicles equipped with Theta 2.5T engines. | |
| 23-AT-003H-1 Aug 2023 | Power Train | If you are servicing an 8-speed vehicle with a âCheck Engineâ light on and one or more of the DTC listed, follow the service procedure and replace the related solenoid and harness. | |
| 23-EE-009H Aug 2023 | Engine And Engine Cooling | This bulletin provides warranty procedure for EGR Valve replacement related to DTC P0401 EGR Flow Insufficient on 2020 and 2021MY Sonata (DN8a) equipped with 2.5 GDI Vehicles. | |
| 23-AT-006H-1 Aug 2023 | Power Train | This TSB provides information to diagnose the push button shifter operation. If you are servicing a vehicle with any symptoms listed below or DTCs (listed on Page 2) , follow the Service Procedure on Page 3. | |
| 23-AT-009H Jul 2023 | Engine And Engine Cooling | If you are servicing an 8-speed DCT front-wheel-drive vehicle with the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition. | |
| 23-BE-007H Jul 2023 | Equipment | This Service Information bulletin provides information on how to update the Apple Carplay software from Hyundaiâs Navigation Updates page. The current version of Google Maps has 10 times the data transmission compared to the previous version. | |
| 23-AT-008H Jul 2023 | Power Train | If you are servicing an 8-speed front-wheel-drive vehicle equipped with automatic transaxle with one or more of the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition. | |
| 23-FL-002H-1 Jun 2023 | Engine And Engine Cooling | This bulletin provides the diagnostic procedure for the GDI injector(s) in certain 21-23MY Sonata, 21-22MY Santa Fe, certain 22MY Santa Cruz, and certain 21-23MY Tucson equipped with 2.5L GDI engines with one or more misfire DTC(s) due to internally leaking GDI injector(s) | |
| 23-AT-002H May 2023 | Power Train | This bulletin provides service procedures to prevent possible moisture intrusion of the HP EOP (High Flow Electric Oil Pump) connector when servicing the 8-speed wet dual clutch transmission (8WDCT). | |
| 23-AT-004H May 2023 | Power Train | This TSB applies only if Recall 236 or Service Campaign T8N has been performed and the 8 speed wet dual clutch transmission (8WDCT) replacement is necessary related due to high pressure electric oil pump (HP EOP) DTCâs P1C2D03 (HP EOP Motor Position Sensor), P193B79 - HP EOP... | |
| 23-BD-007H Apr 2023 | Structure | Hyundai applies a Paint Protection Film (PPF) on new vehicles before delivery to dealerships. It provides a barrier between the paint and contaminants, such as rail dust, acid rain, and industrial fallout. In rare cases, the paint can become clouded under the PPF. | |
| 23-EE-006H Apr 2023 | Engine And Engine Cooling | This bulletin provides the procedure to repair poor pin tension at joint connector JE202 in certain Sonata (2.5L GDI engine) with one or more DTC. | |
| 23-EE-005H Apr 2023 | Engine And Engine Cooling | This bulletin provides the procedure to repair poor pin tension at joint connector JE102 in certain Sonata (1.6 T-GDI engine) with one or more DTC. | |
| 23-AT-003H Apr 2023 | Engine And Engine Cooling | If you are servicing an 8-speed vehicle with a âCheck Engineâ light on and one or more of the DTC listed, follow the service procedure and replace the related solenoid and harness. | |
| 23-FL-002H Mar 2023 | Engine And Engine Cooling | This bulletin provides the diagnostic procedure for the GDI injector(s) in certain 21-23MY Sonata, 21-22MY Santa Fe, certain 22MY Santa Cruz, and certain MY21-23 Tucson equipped with 2.5L GDI engines with one or more misfire DTC(s) due to internally leaking GDI injector(s). | |
| 23-BD-002H Jan 2023 | Visibility | This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. | |
| 23-01-002H Jan 2023 | Forward Collision Avoidance | Some 2021 ~ 2022MY Sonata (DN8/DN8a) vehicles with N-Line trim may not engage Forward Collision Avoidance Assist â Junction Turning (FCA-JT) due to omitted logic. | |
| 22-AT-011H Oct 2022 | Power Train | This bulletin outlines changes to the service manual regarding the replacement of 8-speed dual clutch transmissions (DCT) and associated transmission control module (TCM). | |
| 22-FL-002H Oct 2022 | Engine And Engine Cooling | This bulletin provides the diagnostic procedure for the GDI injector(s) in certain 21-22MY Sonata, Santa Fe, and certain 22MY Santa Cruz, and Tucson equipped with 2.5L GDI engines with one or more misfire DTC(s) due to internally leaking GDI injector(s). | |
| 22-01-059H Aug 2022 | Power Train | This bulletin provides the procedure to update the TCU software to improve drivability and shift quality. | |
| 22-EM-010H Jul 2022 | Engine And Engine Cooling | Follow the guidelines outlined in this bulletin to inspect and clean or replace certain components of the engine intake system accordingly during engine short block or sub-assembly replacement. | |
| 22-AT-009H Jul 2022 | Power Train | If you are servicing an applicable vehicle with a âCheck Engineâ light on and one or more of the DTC listed on Page 2, follow the repair procedure and perform the diagnosis. | |
| 22-GI-006H Jul 2022 | Tires | Effective June 2, 2008, Federal Motor Vehicle Safety Standard 110 (FMVSS 110) established a threshold for correcting load carrying capacity information indicated on tire placards when vehicle weight has been increased before retail sale. | |
| 218/231 amend Jun 2022 | Steering | Certain vehicles may develop a bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly. If bearing noise is heard, follow the procedure in this bulletin to replace the worm shaft bearing. | |
| 22-AT-005H Apr 2022 | Power Train | If you are servicing an applicable vehicle with a âCheck Engineâ light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and valve body harness. |
Showing 60 of 88 distinct bulletins on file for this vehicle.
Before you buy this vehicle
A test-drive checklist generated from this vehicle's own complaint and recall record.
- Cold-start it yourself and listen for the first thirty seconds.Knocking, ticking that fades as it warms, or blue or white smoke on startup are the sounds of this vehicle's engine cluster. Check the oil level and the coolant color, and ask whether the engine or its head gaskets have ever been out.
- Smell for fuel and watch the first restart when hot.Hard starting when warm, hesitation under load, or any fuel odor near the tank or engine bay match this vehicle's fuel-system cluster. Check the recall table for fuel pump campaigns.
- Drive it from a dead stop, twice, on a hill if you can.Shudder, hesitation, or a lurch under light throttle is how this vehicle's largest complaint cluster shows itself. Then ask for the transmission service history in writing; repeat repairs are a pattern, not a fluke.
- Run the VIN against open recalls before you negotiate.This vehicle has 4 recall campaigns on file. An open recall needs VIN-specific confirmation. Many are quick, no-charge fixes and worth negotiating over; an unresolved do-not-drive advisory, or a remedy the manufacturer has not yet made available, should stop the purchase until it is resolved.
- Ask for the service history in writing, then read it against this page.The complaint families above are where owners of this vehicle report trouble. Repairs in exactly those systems are evidence the car had the problem; no such repairs could mean it never developed it, or that it was never fixed. The test-drive items above are how you tell those apart.
Parts search directory
The generic parts list for this vehicle has its own page: a search launcher for every system, filtered by fuel type and era but not by engine, trim, or brake type. It is not a diagnosis and not a fitment guarantee.
Open the parts directory for this Hyundai Sonata →