TSB 9C9 — Hyundai Service campaign
9C9 is a service campaign on file with NHTSA for the Hyundai Palisade, 2023–2025 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Hyundai has become aware that certain Palisade vehicles equipped with 3.8L GDI Lambda II engines may not meet engine-out NOx (Nitrogen Oxides) and Particulate Matter (PM) emission standards.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. 9C9 is filed as a service campaign, which unlike an ordinary bulletin can mean free or reimbursed work when a vehicle qualifies. Ask a dealer using the document ID below, and check open recalls separately at nhtsa.gov/recalls.
Vehicles and model years 9C9 names
| Vehicle | Model years |
|---|---|
| Hyundai Palisade | 2023, 2024, 2025 |
Every document filed under 9C9
| Document ID | Filed | Type |
|---|---|---|
| 9C9 OL | February 21, 2026 | Service campaign |
What 9C9 covers
Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 9C9?
9C9 is a service campaign filed with NHTSA by Hyundai, covering the Hyundai Palisade across the 2023–2025 model years. NHTSA's summary reads: Hyundai has become aware that certain Palisade vehicles equipped with 3.8L GDI Lambda II engines may not meet engine-out NOx (Nitrogen Oxides) and Particulate Matter (PM) emission standards.
Which vehicles does 9C9 cover?
NHTSA's file names Hyundai Palisade (2023–2025). 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 9C9 a recall, and is the repair free?
9C9 is filed as a service campaign, not a recall — but this is the kind of communication that can mean free or reimbursed work if your VIN qualifies. Take the number to a dealer and ask. Recalls are separate and always free; check yours by VIN at nhtsa.gov/recalls.
How do I get the full text of 9C9?
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 9C9, 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 9C9. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.