2020 Hyundai Sonata service bulletins & manufacturer communications

99 manufacturer communications are on file with NHTSA for the 2020 Hyundai Sonata. TSBs are repair guidance for dealers — they are not recalls, and repairs are not automatically free.

• The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by Jilin Province De…
  DTN DL · Technical service bulletin · Air Bags · issued Apr 10, 2026
• The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin …
  DTN DCS · Technical service bulletin · Air Bags · issued Apr 10, 2026
• 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. In the following cas…
  26-AD-001H TSB · Technical service bulletin · Forward Collision Avoidance · issued Feb 25, 2026
• 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 Eng…
  26-EM-003H TSB · Technical service bulletin · Engine · issued Feb 5, 2026
• 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 …
  25-BD-012H TSB · Technical service bulletin · Exterior Lighting · issued Nov 6, 2025
• 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 …
  25-BE-020H TSB · Technical service bulletin · Electrical System · issued Sep 30, 2025
• 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 …
  25-BE-002H TSB · Technical service bulletin · Electrical System · issued May 16, 2025
• 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 comm…
  25-01-024H-1 TSB · Service campaign · Electrical System · issued May 8, 2025
• Certain Sonata (DN8) and Sonata (DN8A) vehicles may experience issues with the air conditioning due to damaged wiring in the engine room junction box. This bulletin provides instru…
  25-EE-002H · Technical service bulletin · Engine · issued Apr 30, 2025
• Certain Sonata (DN8) and Sonata (DN8A) vehicles may experience issues with the air conditioning due to damaged wiring in the engine room junction box. This bulletin provides instru…
  25-EE-002H TSB · Technical service bulletin · Electrical System · issued Apr 25, 2025
• 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 f…
  25-01-001H TSB · Service campaign · Fuel/propulsion System · issued Jan 3, 2025
• 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 Un…
  25-01-001H DBP · Service campaign · Fuel/propulsion System · issued Jan 3, 2025
• The subject vehicles may have Diagnostic Trouble Code (DTC) P0451 stored in the ECU, which could cause the Check Engine Lamp to come on.
  9B1 OL · Service campaign · Electrical System · issued Dec 10, 2024
• 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). The California Air…
  24-01-020H DBP · Service campaign · Fuel/propulsion System · issued Nov 14, 2024
• 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 f…
  24-01-020H TSB · Service campaign · Fuel/propulsion System · issued Nov 14, 2024
• 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 rel…
  24-EM-001H · Technical service bulletin · Engine · issued Jul 23, 2024
• 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…
  24-BE-001H-1 · Technical service bulletin · Electrical System · issued Jul 19, 2024
• 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 Pag…
  24-AT-002H · Technical service bulletin · Power Train · issued Apr 9, 2024
• 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 op…
  24-FL-002H · Technical service bulletin · Engine and Engine Cooling · issued Feb 29, 2024
• 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…
  24-BD-001H · Technical service bulletin · Visibility/wiper · issued Feb 14, 2024
• 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…
  24-BE-001H · Technical service bulletin · Electrical System · issued Jan 10, 2024
• This TSB provides information to diagnose the push button shifter operation.
  23-AT-006H-2 · Technical service bulletin · Power Train · issued Nov 10, 2023
• This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
  23-EM-005H · Technical service bulletin · Engine and Engine Cooling · issued Oct 13, 2023
• 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 …
  23-AT-008H-1 · Technical service bulletin · Power Train · issued Sep 14, 2023
• If you are servicing an 8-speed vehicle with a â Check Engineâ light on and one or more of the DTC listed, follow the service procedure and replace the related solenoid and harness…
  23-AT-003H-1 · Technical service bulletin · Power Train · issued Aug 25, 2023
• 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-EE-009H · Technical service bulletin · Engine and Engine Cooling · issued Aug 21, 2023
• 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 S…
  23-AT-006H-1 · Technical service bulletin · Power Train · issued Aug 1, 2023
• This Service Information bulletin provides information on how to update the Apple Carplay software from Hyundaiâ s Navigation Updates page. The current version of Google Maps has 1…
  23-BE-007H · Technical service bulletin · Equipment · issued Jul 17, 2023
• 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 …
  23-AT-008H · Technical service bulletin · Power Train · issued Jul 11, 2023
• 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…
  23-BD-007H · Technical service bulletin · Structure · issued Apr 24, 2023
• 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-EE-005H · Technical service bulletin · Engine and Engine Cooling · issued Apr 7, 2023
• 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-006H · Technical service bulletin · Engine and Engine Cooling · issued Apr 7, 2023
• If you are servicing an 8-speed vehicle with a â Check Engineâ light on and one or more of the DTC listed, follow the service procedure and replace the related solenoid and harness…
  23-AT-003H · Technical service bulletin · Engine and Engine Cooling · issued Apr 6, 2023
• 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 …
  23-BD-002H · Technical service bulletin · Visibility · issued Jan 30, 2023
• 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…
  22-EM-010H · Technical service bulletin · Engine and Engine Cooling · issued Jul 28, 2022
• 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 w…
  22-GI-006H · Technical service bulletin · Tires · issued Jul 14, 2022
• 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 bulle…
  218/231 amend · Technical service bulletin · Steering · issued Jun 3, 2022
• If you are servicing an applicable vehicle with a â Check Engineâ light on and one or more of the DTC listed below, follow the repair procedure and replace the related input/output…
  22-AT-006H · Technical service bulletin · Engine and Engine Cooling · issued May 19, 2022
• If you are servicing an applicable vehicle with a â Check Engineâ light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and…
  22-AT-005H · Technical service bulletin · Power Train · issued Apr 28, 2022
• Certain 2020-2022MY Sonata (DN8A) vehicles may develop a bearing noise within the Motor Driven Power Steering (MDPS) column worm shaft assembly. If bearing noise is heard, follow t…
  22-ST-003H · Technical service bulletin · Steering · issued Apr 8, 2022
• Certain 2020-22MY Sonata (DN8a) and 2021-22MY Santa Fe (TMa) vehicles equipped with 2.5L engine may exhibit a MIL with DTC(s): â ¢ P2074: Mass Airflow Sensor Plausibility â ¢ P2074…
  22-01-018H · Technical service bulletin · Engine and Engine Cooling · issued Feb 3, 2022
• This TSB provides a procedure to diagnose the push button shifter operation. If you are servicing a vehicle with any symptoms or DTC listed below, follow the Service Procedure, Pag…
  22-AT-001H · Technical service bulletin · Power Train · issued Jan 21, 2022
• Certain 2020-22MY Sonata (DN8a), 2021-22MY Santa Fe (TMa), and 2022MY Tucson (NX4/NX4a) vehicles equipped with 2.5L engine may exhibit a MIL with DTC(s): â ¢ P2074: Mass Airflow Se…
  21-01-075H · Technical service bulletin · Engine and Engine Cooling · issued Dec 9, 2021
• Certain 2020-2021 Sonata (DN8a) vehicles with 1.6T engines may exhibit a check engine light in conjunction with a popping noise, abnormal smell from the engine compartment, rough r…
  21-EM-010H-1 · Technical service bulletin · Engine and Engine Cooling · issued Nov 8, 2021
• 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 bulle…
  21-ST-003H · Technical service bulletin · Steering · issued Oct 1, 2021
• Certain 2020-2021 Sonata (DN8a) vehicles with 1.6T engines may exhibit a check engine light in conjunction with a popping noise, abnormal smell from the engine compartment, rough r…
  21-EM-010H · Technical service bulletin · Engine and Engine Cooling · issued Sep 30, 2021
• This TSB provides a procedure to diagnose the push button shifter operation.
  21-AT-009H · Technical service bulletin · Power Train · issued Jul 13, 2021
• This bulletin provides information related to an Electronic Control Module (ECM) software update which revises the OBD Air Fuel Ratio Imbalance (AFRI) monitor function frequency an…
  21-01-051H · Technical service bulletin · Engine and Engine Cooling · issued Jun 22, 2021
• If you are servicing an 8-speed front-wheel-drive vehicle with the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition. ï · DIAGNOSTIC TROUBLE CO…
  21-AT-007H · Technical service bulletin · Power Train · issued Jun 14, 2021
• This bulletin provides the service procedure for engine connecting rod bearing clearance testing. Perform the procedure outlined in this bulletin to fulfill the Bearing Clearance T…
  21-EM-004H · Technical service bulletin · Equipment · issued Mar 30, 2021
• This bulletin provides best practice recommendations when performing brake service procedures.
  21-BR-002H · Technical service bulletin · Equipment Adaptive/mobility · issued Mar 23, 2021
• When using Wireless CarPlay, the system may intermittently auto disconnect. When Wireless CarPlay is disconnected, a pop up message â Phone Not Responding. Please reconnect it and …
  21-BE-004H · Technical service bulletin · Equipment · issued Mar 16, 2021
• This bulletin provides the inspection procedure and repair guidelines for certain vehicles listed below.
  21-EM-003H · Technical service bulletin · Engine and Engine Cooling · issued Mar 10, 2021
• This bulletin provides information related to an Electronic Control Module (ECM) software update which revises detection logic for DTC P2422: EVAP System Restricted Vent Valve logi…
  21-01-009H · Technical service bulletin · Electrical System · issued Feb 11, 2021
• The rack-mounted dual pinion Motor Driven Power Steering (MDPS) system components can be replaced separately from the complete assembly. This bulletin provides information on the s…
  21-ST-001H · Technical service bulletin · Steering · issued Jan 28, 2021
• When using Wireless CarPlay, the system may intermittently auto disconnect. When Wireless CarPlay is disconnected, a pop up message â Phone Not Responding. Please reconnect it and …
  20-BE-014H · Technical service bulletin · Electrical System · issued Dec 21, 2020
• This bulletin describes the procedure to replace the front door module assembly if the front door window cannot close or the door regulator cables are separated from the regulator …
  20-BD-020H · Technical service bulletin · Visibility · issued Dec 18, 2020
• This bulletin describes the procedure to inspect and identify fluid which may appear around the brake caliper area.
  20-BR-002H · Technical service bulletin · Service Brakes · issued Nov 30, 2020
• This bulletin describes the procedure to diagnose and repair a window exhibiting noise while lowering and raising.
  20-BD-013H-1 · Technical service bulletin · Visibility · issued Nov 20, 2020
• This bulletin provides tire vibration service procedures, including how to optimize vehicle vibration performance. For all wheel/tire balance claims, the â Tire Balance Data Sheetâ…
  20-SS-004H · Technical service bulletin · Wheels · issued Nov 19, 2020
• Certain 2020MY Sonata vehicles (DN8A) may experience an inoperative air conditioning system with cold air not blowing from the vents. This condition may be caused by an electrical …
  20-HA-003H · Technical service bulletin · Visibility · issued Oct 23, 2020
• If you are servicing an applicable vehicle with a â Check Engineâ light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and…
  20-AT-005H-1 · Technical service bulletin · Power Train · issued Oct 13, 2020
• This bulletin provides information and procedures for collecting OBD â In Use Monitor Performance Ratioâ (IUMPR) data on certain 2019-2021MY vehicles at California dealers. This re…
  20-01-039H · Technical service bulletin · Electrical System · issued Oct 9, 2020
• 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 bulle…
  20-ST-003H-1 · Technical service bulletin · Steering · issued Sep 9, 2020
• This bulletin provides information regarding replacement of the column-mounted Motor Driven Power Steering (MDPS) system as separate components.
  20-ST-001H-2 · Technical service bulletin · Equipment · issued Sep 9, 2020
• This bulletin provides a procedure to transfer pressure data to the TCU using GDS Mobile. This procedure is necessary to reduce the transmission learning time and improve the shift…
  20-AT-020H · Technical service bulletin · Power Train · issued Sep 2, 2020
• 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 bulle…
  20-ST-003H · Technical service bulletin · Electrical System · issued Aug 10, 2020
• This bulletin provides information regarding replacement of the column-mounted Motor Driven Power Steering (MDPS) system as separate components.
  20-ST-001H-1 · Technical service bulletin · Electrical System · issued Aug 10, 2020
• This bulletin provides information regarding condensation related to moisture accumulation in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. The TSB …
  20-BD-014H · Technical service bulletin · Equipment · issued Jul 14, 2020
• This service campaign information is related to an Electronic Control Module (ECM) software update to revise the logic for DTC P030X: Cylinder â Xâ Misfire Detected and P0456: EVAP…
  Campaign T5A Dea · Technical service bulletin · Engine and Engine Cooling · issued Jun 22, 2020
• This bulletin provides information related to an Electronic Control Module (ECM) software update to revise the logic for DTC P030X: Cylinder â Xâ Misfire Detected and P0456: EVAP S…
  20-01-027H · Technical service bulletin · Equipment · issued Jun 22, 2020
• This bulletin describes the Idle Stop and Go (ISG) system operation, diagnostic and battery sensor recalibration procedure. Refer to applicable Shop Manual and Ownerâ s Manual for …
  20-FL-004H · Technical service bulletin · Engine and Engine Cooling · issued May 29, 2020
• If you are servicing any of the vehicles listed below with a harsh and/or delayed shift, use the GDS as shown in the Service Procedure to measure shift engagement time.
  20-AT-019H · Technical service bulletin · Power Train · issued May 21, 2020
• This bulletin provides information on tire maintenance best practices and procedures for dealers and customers to maximize tire life and performance.
  20-SS-002H(1) · Technical service bulletin · Wheels · issued May 6, 2020
• This bulletin describes the general guidelines to help disinfect and protect vehicle exterior/interior surfaces using recommended safe chemical products.
  20-BD-007H-1 · Technical service bulletin · Equipment · issued May 1, 2020
• This bulletin provides information on identifying dealer stock vehicles with either: â ¢ A Battery SOC alert - low Battery State of Charge (SOC) at or below 50%. â ¢ A 30 Day alert…
  20-EE-003H · Technical service bulletin · Electrical System · issued Apr 23, 2020
• The automatic transmission warranty repair policy authorizes in-dealership repairs of the following components for both OEM (new) and remanufactured automatic transmissions:
  20-AT-016H · Technical service bulletin · Equipment Adaptive/mobility · issued Apr 17, 2020
• This bulletin describes the procedure to diagnose and repair a window exhibiting noise while lowering and raising.
  20-BD-013H · Technical service bulletin · Visibility · issued Apr 13, 2020
• Certain 2020MY Sonata (DN8) vehicles may exhibit a grease leak coming from the right side, inner CV axle boot area. This bulletin describes the procedure to replace the right side …
  20-DS-001H(1) · Technical service bulletin · Equipment · issued Apr 9, 2020
• Hyundai vehicles are equipped with Dark Current Control logic to help reduce amperage draw amount and conserve Battery State of Charge (SOC%). A selected Dark Current Control Mode …
  20-EE-005H · Technical service bulletin · Electrical System · issued Mar 31, 2020
• This bulletin describes the general guidelines to disinfect and protect vehicle interior surfaces using certain safe chemical products.
  20-BD-007H · Technical service bulletin · Equipment Adaptive/mobility · issued Mar 23, 2020
• This bulletin describes the mandatory procedure to submit battery test data electronically for battery warranty claims by running the GDS Battery Claim App. The App must be run rig…
  20-EE-002H(1) · Technical service bulletin · Electrical System · issued Mar 18, 2020
• This bulletin describes the procedure to repair an inside door handle exhibiting noise when opening the door.
  20-BD-005H · Technical service bulletin · Latches/locks/linkages · issued Mar 17, 2020
• If you are servicing an 8-speed front-wheel-drive vehicle with the DTC or symptoms listed below, refer to the Service Procedure to diagnose the condition.
  20-AT-006H · Technical service bulletin · Power Train · issued Feb 12, 2020
• This service campaign provides information related to an ECM software update to revise the logic for DTC P0456: EVAP System Leakage Detected Very Small Leak.
  Campaign T4N Dea · Technical service bulletin · Electrical System · issued Feb 11, 2020
• This bulletin provides information related to an Electronic Control Module (ECM) software update to revise the logic for DTC P0456: EVAP System Leakage Detected Very Small Leak.
  20-01-005H(1) · Technical service bulletin · Engine and Engine Cooling · issued Feb 11, 2020
• This bulletin describes the requirements for all wheel alignment and/or vehicle tracking claims and best practices when diagnosing and conducting alignment-related repairs for all …
  20-SS-001H · Technical service bulletin · Suspension · issued Feb 5, 2020
• If you are servicing an applicable vehicle with a Check Engine light on and one or more of the DTC listed below, follow the repair procedure and replace the related input/output sp…
  20-AT-003H · Technical service bulletin · Engine and Engine Cooling · issued Jan 27, 2020
• If you are servicing an applicable vehicle with a Check Engine light on and one or more of the DTC listed below, follow the repair procedure and replace the related oil pressure ha…
  20-AT-004H · Technical service bulletin · Engine and Engine Cooling · issued Jan 27, 2020
• If you are servicing an applicable vehicle with a Check Engine light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and oi…
  20-AT-005H · Technical service bulletin · Engine and Engine Cooling · issued Jan 27, 2020
• This bulletin provides guidelines to inspect the USB, head unit, and multi-box for common connection conditions. 2. This bulletin presents guidelines to inspect for common Android …
  20-BE-001H · Technical service bulletin · Electrical System · issued Jan 16, 2020
• This bulletin provides information regarding replacement of the column-mounted Motor Driven Power Steering (MDPS) system as separate components.
  20-ST-001H · Technical service bulletin · Steering · issued Jan 3, 2020
• This bulletin describes the procedure to identify and retrieve the Unique Identification Numbers (UID) from the 20MY Sonata's Identity Authentication Unit (IAU) to enable Hyundai D…
  20-01-001H · Technical service bulletin · Equipment · issued Jan 2, 2020
• This TSB provides a procedure to diagnose and repair a transaxle for the following Incorrect Ratio DTC (transaxle clutch slipping more than 200 rpm in gear).
  20-AT-001H · Technical service bulletin · Power Train · issued Jan 2, 2020
• On certain Sonata (DN8) vehicles equipped with smart user features, the registered Hyundai app and the digital key card may not open the doors or start the vehicle when using these…
  Campaign T4L Dea · Technical service bulletin · Electrical System · issued Jan 2, 2020
• Hyundai is conducting a Service Campaign to inspect, and if necessary, re-route the main harness adjacent to the brake booster of certain 2020MY Sonata (DN8) vehicles.
  Campaign T4J Dea · Technical service bulletin · Service Brakes · issued Dec 20, 2019
• This bulletin describes the procedure to inspect, and if necessary re-route the main harness adjacent to the brake booster of certain 2020MY Sonata (DN8) vehicles.
  19-01-043H · Technical service bulletin · Service Brakes · issued Dec 20, 2019
• This bulletin provides information and procedures for collecting OBD ?In Use Monitor Performance Ratio? (IUMPR) data on certain 2019-2020MY vehicles at California dealers. This rep…
  19-01-042H · Technical service bulletin · Equipment · issued Dec 17, 2019
• This bulletin provides information on the Launch Quality Monitoring Process (LQMP) for the 2020MY Hyundai Sonata. After a new vehicle launch, Hyundai uses the LQMP to monitor all c…
  19-GI-008H · Technical service bulletin · Equipment · issued Nov 7, 2019