Mazda warranty extension CSP12
What it saysDENSO LOW-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a recall campaign. NHTSA’s full summary ↓
Mazda filed this with NHTSA as a warranty extension dated Nov 18, 2024, received Dec 4, 2024, about the fuel/propulsion system — 6 documents under this number: CSP12 Repair, CSP12 Repair MX5, CSP12 Parts Warr, CSP12 FAQs and 2 more. It names 23 model years (2017–2021). A warranty extension is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationCUSTOMER SERVICE PROGRAM CSP12 - DENSO LOW-PRESSURE FUEL PUMP CUSTOMER SERVICE PROGRAM WARRANTY EXTENSION: Attention ALL Mazda Dealers: This is a Warranty Extension and not a recall campaign. Repairs are not to be made unless there is a confirmed low-pressure fuel pump failure within the coverage period. As of November 18, 2024 Repair Procedures and Parts and Warranty documents are available.
One of the 432 warranty extensions and special-coverage programs on file — every make, with the term each runs to.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| CSP12 Repair | Warranty extension | Nov 18, 2024 | 11011341 | PDF, 2,553 KB |
| CSP12 Repair MX5 | Warranty extension | Nov 18, 2024 | 11011338 | PDF, 1,196 KB |
| CSP12 Parts Warr | Warranty extension | Nov 18, 2024 | 11011336 | PDF, 151 KB |
| CSP12 FAQs | Warranty extension | Nov 12, 2024 | 11011331 | PDF, 62 KB |
| CSP12 | Warranty extension | Nov 8, 2024 | 11011345 | PDF, 93 KB |
| CSP12 Dealer Letter | Warranty extension | Nov 8, 2024 | 11011326 | PDF, 131 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty |
|---|---|---|
| 9983-30-408 | — | — |
| GP9B-42-693 | — | — |
| PYY2-13-350 | — | — |
Read by machine from the document NHTSA serves (21 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.
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.
Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2018 Mazda MAZDA2; 2019 Mazda MAZDA2; 2020 Mazda MAZDA2.
A 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 20 model years this bulletin names have filed 1,593 complaints with NHTSA since 2015. 696 of them name Engine, Fuel/Propulsion System — 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 2018 Mazda CX-5, the 29 owners who gave an odometer reading for Engine reported it at a median of 28,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
Mazda has an open TSB Technical Service Bulletin for this and many other Mazda's with the same engine- TSB-Collant Leaks at Cylinder Heads, Bulletin # - 01-013/21 issued 10/15/21 (CRACKED CYLINDER HEADS) My 2019 Mazda is right here on the list: Mazda Dealer claims I have to replace the engine at a cost estimated at $12,000 us dollars no…
2019 Mazda CX-9 · Engine · filed with NHTSA Jan 11, 2024 · ODI 11564776
Low Engine Oil Light keeps appearing at seemingly random intervals. I will heat up my vehicle, begin driving, and sometimes after 10 minutes, sometimes after 20 minutes it will come on. I drove 2.5 hours and it did not come on at all. It first started Friday 11/29 and was driven to and from a few places and came on 50% of the time.
2020 Mazda CX-30 · Engine · filed with NHTSA Dec 3, 2024 · ODI 11628495
The contact owns a 2019 Mazda MX-5. The contact received notification of NHTSA Campaign Number: 21V875000 (Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair.
2019 Mazda MX-5 · Fuel/Propulsion System · filed with NHTSA Jun 22, 2022 · ODI 11470458
In depth: 2019 Mazda CX-5 engine problems → · 2018 Mazda CX-5 engine problems → · 2018 Mazda CX-9 engine problems →
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 fuel/propulsion system
Source: same model, same component group3 other manufacturer communications filed against these Mazda models under the same component group (fuel/propulsion system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SA-032-26 | Service bulletin | May 2, 2026 | This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-011/25 10/16/25 and 02/27/25 DESCRIPTION Some… |
| SA-023-26 | Service bulletin | Apr 11, 2026 | This Service Alert supersedes the previously issued M-Tip(s) listed below. The changes are noted in Red text. MT-003/22 03/02/22 DESCRIPTION… |
| 09-040-23 | Service bulletin | Nov 14, 2023 | When opening the fuel-filler lid to refuel, some customers may notice water and/or sand in the fuel-filler lid box area. They may complain a… |
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 CSP12 a recall?
No. A warranty extension 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 CSP12 repair free?
A warranty extension is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does CSP12 cover?
The manufacturer filed it against 23 model years: 2019 Mazda CX-3, 2018 Mazda CX-3, 2020 Mazda CX-30, 2019 Mazda CX-5, 2018 Mazda CX-5, 2017 Mazda CX-5 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.