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Manufacturer communication · Service bulletin

Honda bulletin ATI&02012024904

Honda filed this with NHTSA as a service bulletin dated Feb 1, 2024, received Feb 15, 2024, about the engine and engine cooling. It names 2 model years (2017–2018). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.

What the bulletin says

Source: NHTSA's summary of the manufacturer's communication

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2018 Fits with customer complaint of Check Engine Light (CEL) on with DTC P0420 (Catalyst System Efficiency Below Threshold) stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to your attempting a repair of any kind.

Kind Service bulletin Manufacturer date Feb 1, 2024 Received by NHTSA Feb 15, 2024 Components Engine And Engine Cooling

Document filed under this number

DocumentKindDatedNHTSA id
ATI&02012024904Service bulletinFeb 1, 202410250329

The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. Quote it at a service desk; it is what the dealer’s system is keyed on.

Model years it names

Source: as the manufacturer filed them

A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.

Common questions

Source: NHTSA, 49 CFR 579.5

Is Honda ATI&02012024904 a recall?

No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.

Is the ATI&02012024904 repair free?

Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.

Which vehicles does ATI&02012024904 cover?

The manufacturer filed it against 2 model years: 2018 Honda Fit, 2017 Honda Fit. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.