TSB ATI&12022024909 — Honda Manufacturer communication

ATI&12022024909 is a manufacturer communication on file with NHTSA for 3 Honda models, 2017–2022 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2024 Accord 1.5Ls, 2021-2024 Civics 1.5Ls, 2023-2024 CR-Vs 1.5Ls, and 2017 Fits with customer complaint of Check Engine Light (CEL) on with DTC P0420 [Catalyst System Efficiency Below Threshold]…

NHTSA's own summary of the document, quoted from the public manufacturer-communications file.

1Document filed
3Vehicles named
6Model years

Vehicles and model years ATI&12022024909 names

VehicleModel years
Honda Accord 2018, 2019, 2020, 2021, 2022
Honda Civic 2021
Honda Fit 2017

Every document filed under ATI&12022024909

Document IDFiledType
ATI&12022024909 December 3, 2024 Manufacturer communication

What ATI&12022024909 covers

Engine — the component vocabulary NHTSA files this communication under.

← All Honda Accord TSB years TSB lookup by model

Questions buyers ask

What is TSB ATI&12022024909?

ATI&12022024909 is a manufacturer communication filed with NHTSA by Honda, covering 3 Honda models across the 2017–2022 model years. NHTSA's summary reads: Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2024 Accord 1.5Ls, 2021-2024 Civics 1.5Ls, 2023-2024 CR-Vs 1.5Ls, and 2017 Fits with customer complaint of Check Engine Light (CEL) on with DTC P0420 [Catalyst System Efficiency Below Threshold]…

Which vehicles does ATI&12022024909 cover?

NHTSA's file names Honda Accord (2018–2022); Honda Civic (2021); Honda Fit (2017). 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 ATI&12022024909 a recall, and is the repair free?

No. ATI&12022024909 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 ATI&12022024909?

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 ATI&12022024909, its date, and NHTSA's own summary from the public file.

Data updated 2026-08-20 from NHTSA's public records

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 ATI&12022024909. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.