Mazda bulletin 05-002-23
What it saysSome vehicles may experience the check engine light and automatic transaxle warning light ON with one or more of these DTCs stored in the TCM memory (P0842, P0847, P0872, P0877, P0780, P1738). NHTSA’s full summary ↓
Mazda filed this with NHTSA as a service bulletin dated May 17, 2023, received Jun 4, 2023, about the power train. It names 27 model years (2016–2021). 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.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationSome vehicles may experience the check engine light and automatic transaxle warning light ON with one or more of these DTCs stored in the TCM memory (P0842, P0847, P0872, P0877, P0780, P1738).
Trouble codes it names: P0780 P0842 P0847 P0872 P0877 P1738 P0729 P0731 P0732 P0733 P0734 P0735 P0736 7 of 13 read from the document itself
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 05-002-23 | Service bulletin | May 17, 2023 | 10237199 | PDF, 535 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| FZ01-19-1X1 | Seal, Oil 1 [R] Only when replacing contr | — | eBay Motors → |
| FZ01-19-967 | Clamp, Hose 1 [R] Only when replacing contr | — | eBay Motors → |
| FZ01-21-1P1 | Gasket 4 [R] Only when replacing contr | — | eBay Motors → |
| FZ01-21-2C0 | Switch A | 1 | eBay Motors → |
| FZ01-21-2J0 | Swtich B | 1 | eBay Motors → |
| 9YA0-10-615A | Bolt 16 [R] | — | eBay Motors → |
| FZ01-21-500 | Oil strainer 1 [R] | — | eBay Motors → |
| FU31-19-423 | Plug 1 [R] | — | eBay Motors → |
| 9956-41-400 | Drain Packing 1 [R] | — | eBay Motors → |
| FZ01-21-031 | are included with this part | — | eBay Motors → |
| FZ01-21-032 | are included with this part | — | eBay Motors → |
Read by machine from the document NHTSA serves (11 pages), read Sep 30, 2026. A part number is shown only where it matches Mazda’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. 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. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
Find the control module (tcm/pcm/tecm) for the 2021 CX-3 →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 27 model years this bulletin names have filed 2,564 complaints with NHTSA since 2015. 219 of them name Power Train — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
On the 2016 Mazda CX-5, the 41 owners who gave an odometer reading for Power Train reported it at a median of 5,411 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
I bought a used 2017 Mazda Cx-9 from west shore honda in tampa in july of 2020. They screwed me financially and i'll handle that separately. There has been an ongoing issue since the first few days after buying the car. I've complained multiple times via email and phone. I've been trying the service department countless times.
2017 Mazda CX-9 · Power Train · filed with NHTSA Mar 13, 2021
Situation: CVT tramsmission running smoothly when car was first bought. I AM 3 weeks into owning the vehicle and the transmission seems to be going out. I had a diagnostic text run and there are zero computer errors. Issues: high revs and jerking of vehicle when gassed. Whether I AM at a stand still or already giving gas.
2017 Mazda Mazda6 · Power Train · filed with NHTSA Jan 30, 2021
I have a 2016 Mazda Cx-5 grand touring automatic transmission. I bought it 9/28/15. Yesterday (12/9/15) with only 4500 miles on it, I started having problems with the transmission. Reverse was ok, but it was having difficulty engaging in drive. It felt like it was in neutral and wouldn't move.
2016 Mazda CX-5 · Power Train · filed with NHTSA Dec 10, 2015
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the power train
Source: same model, same component group21 other manufacturer communications filed against these Mazda models under the same component group (power train), newest first. The eight newest are listed; the rest are on the Mazda list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 01-008-26 | Service bulletin | May 1, 2026 | This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 01-008/23 06/05/23 Some vehicles ma… |
| 01-003-26a | Service bulletin | May 1, 2026 | This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red text. 01-003/26 01/30/26 Some vehicl… |
| SA-029-26 | Service bulletin | Apr 21, 2026 | This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DE… |
| 01-007-26 | Service bulletin | Apr 2, 2026 | Some vehicles may exhibit the check engine light ON with DTC P2112… |
| SA-056-25 | Service bulletin | Nov 27, 2025 | When inspected, the differential or PTO oil is dark or black. This is considered normal and NO repair should be performed. During production… |
| 05-001-25a | Service bulletin | Nov 23, 2025 | Some customers may see the A/T warning light on during (or immediately after) engine start-up with DTCs P073D:00-TCM / P1738:00-TCM stored.… |
| SA-040-25a | Service bulletin | Nov 18, 2025 | A New Automatic Transmission Fluid (ATF-A7) is being used for some 2023-2026 models. ATF-A7 is an extremely low viscosity formulation with l… |
| SA-040-25 | Service bulletin | Aug 27, 2025 | A New Automatic Transmission Fluid (ATF-A7) is being used for some 2023-2026 models. ATF-A7 is an extremely low viscosity formulation with l… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Mazda, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Mazda 05-002-23 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 05-002-23 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 05-002-23 cover?
The manufacturer filed it against 27 model years: 2021 Mazda CX-3, 2020 Mazda CX-3, 2019 Mazda CX-3, 2018 Mazda CX-3, 2017 Mazda CX-3, 2016 Mazda CX-3 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.