TSB 23-AT-003H-1 — Hyundai Service bulletin
23-AT-003H-1 is a service bulletin on file with NHTSA for 3 Hyundai models, 2019–2024 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. If you are servicing an 8-speed vehicle with a “Check Engine” light on and one or more of the DTC listed, follow the service procedure and replace the related solenoid and harness.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 23-AT-003H-1 names
| Vehicle | Model years |
|---|---|
| Hyundai Palisade | 2022, 2024 |
| Hyundai Santa Fe | 2019, 2020 |
| Hyundai Sonata | 2020 |
Every document filed under 23-AT-003H-1
| Document ID | Filed | Type |
|---|---|---|
| 23-AT-003H-1 | August 25, 2023 | Service bulletin |
What 23-AT-003H-1 covers
Transmission & drivetrain — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 23-AT-003H-1?
23-AT-003H-1 is a service bulletin filed with NHTSA by Hyundai, covering 3 Hyundai models across the 2019–2024 model years. NHTSA's summary reads: If you are servicing an 8-speed vehicle with a “Check Engine” light on and one or more of the DTC listed, follow the service procedure and replace the related solenoid and harness.
Which vehicles does 23-AT-003H-1 cover?
NHTSA's file names Hyundai Palisade (2022, 2024); Hyundai Santa Fe (2019–2020); Hyundai Sonata (2020). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB 23-AT-003H-1 a recall, and is the repair free?
No. 23-AT-003H-1 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of 23-AT-003H-1?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 23-AT-003H-1, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 23-AT-003H-1. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.