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Manufacturer communication · Service campaign

Mazda service campaign MSP66

What it saysMazda Service Program MSP66 - Engine Warning Light Illumination with DTC P0DAB 2024-2026 CX-90 and 2025-2026 CX-70, with H3T M Hybrid Boost. NHTSA’s full summary ↓

Mazda filed this with NHTSA as a service campaign dated Apr 15, 2026, received Jan 4, 2026, about the engine — 9 documents under this number: MSP66 Warr b, MSP66 Video, MSP66 Repair b, MSP66 Warranty a and 5 more. It names 5 model years (2024–2026). A service campaign 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 communication
What the dealer does All Mazda dealers must quarantine any affected new, used or Certified Pre-Owned in-stock vehicles until the repair is completed.

Picked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.

Built 27 Dec 2022 – 17 Nov 2025 “From December 27, 2022 through November 17, 2025”
Built 5 Dec 2023 – 17 Nov 2025 “From December 5, 2023 through November 17, 2025”

What it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.

Subject: Mazda Service Program MSP66 - Engine Warning Light Illumination with DTC P0DAB 2024-2026 CX-90 and 2025-2026 CX-70, with H3T M Hybrid Boost. Mazda Motor Corporation has decided to conduct a Mazda Service Programs (MSP66) for vehicles in the U.S. and U.S. Territories. Mazda vehicles sold in Canada and Mexico are also affected by this program and must be repaired if presented to your dealership. All vehicles in this program will be in “Open” status on December 15, 2025 concurrent with the announcement of this communication. MAZDA SALES AND SERVICE TEAMS - ACTION ITEM: There are approximately 7,000 vehicles in stock at U.S. Mazda dealers which must be repaired prior to delivery. All Mazda dealers must quarantine any affected new, used or Certified Pre-Owned in-stock vehicles until the repair is completed. Once completed, the car can be delivered, and the Warranty claim can be submitted later without penalty since the car has been repaired. The affected dealer list will be provided to your District Service Manager daily beginning with receipt of this dealer email.

Trouble codes it names: P0DAB

Manufacturer campaign id MSP66 Kind Service campaign Manufacturer date Apr 15, 2026 Received by NHTSA Jan 4, 2026 Components Engine, Electrical System, Power Train First dated Dec 11, 2025

Documents filed under this number

DocumentKindDatedNHTSA idAt NHTSA
MSP66 Warr bService campaignApr 15, 202611032105PDF, 99 KB
MSP66 VideoService campaignJan 23, 202611028138PDF, 50 KB
MSP66 Repair bService campaignJan 23, 202611028136PDF, 655 KB
MSP66 Warranty aService campaignJan 6, 202611028139PDF, 98 KB
MSP66 Repair aService campaignJan 6, 202611028134PDF, 433 KB
MSP66 RepairService campaignDec 19, 202511026920PDF, 433 KB
MSP WarrantyService campaignDec 17, 202511026921PDF, 93 KB
MSP66 Dlr LtrService campaignDec 15, 202511026919PDF, 102 KB
MSP66Service campaignDec 11, 202511026918PDF, 149 KB

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 them

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 database

Owners of the 5 model years this bulletin names have filed 587 complaints with NHTSA since 2015. 233 of them name Engine, Electrical System, 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.

I own a 2026 Mazda CX-90 hybrid with approximately 13,000 miles. The vehicle began making a grinding noise while driving, which has progressively worsened over time. It has since developed a hard knocking noise accompanied by noticeable vibration when the vehicle shifts gears. This knocking occurs during normal in-town driving.

2025 Mazda CX-90 · Engine · filed with NHTSA Jul 14, 2026 · ODI 11750408

My boyfriend and I rented the car from Hertz Car Rental in on Labor Day weekend. Within moments of driving the car off the lot, the safety camera system stopped working and the lights came on saying they weren’t working. The touch screen also started glitching and intermittently working but we didn’t think too much about it.

2026 Mazda CX-90 · Engine · filed with NHTSA Sep 20, 2026 · ODI 11765605

My car is literally stalling out on me. It started by sputtering when I put my foot on the gas a week or so ago. Then today It literally started just losing power while driving. It’s not throwing any codes but that’s super dangerous and this car is only a year old. I am extremely concerned for my safety

2025 Mazda CX-90 · Power Train · filed with NHTSA Jul 4, 2026 · ODI 11748301

In depth: 2024 Mazda CX-90 engine problems → · 2024 Mazda CX-90 electrical 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 engine

Source: same model, same component group

54 other manufacturer communications filed against these Mazda models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Mazda list.

NumberKindDatedNHTSA’s summary
PF-26-04OtherSep 30, 2026SUBJECT: ORDERING REQUIREMENT FOR AT COMPONENTS FOR H3T (INLINE 6) Use this guide before ordering or replacing an AT component on applicabl…
SA-061-26Service bulletinSep 17, 2026DESCRIPTION Use this guide before ordering or replacing an AT component on applicable H3T vehicles. QUICK CHECKLIST BEFORE ORDERING Confirm…
SA-059-26Service bulletinSep 10, 2026This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-029/24 05/09/24 DESCRIPTION The CX…
SA-038-26aService bulletinSep 4, 2026This Service Alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-038/26 06/15/26 DESCR…
SA-058-26Service bulletinAug 26, 2026This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-001/25 10/16/25, 05/15/25, 04/17/25…
SA-041-26Service bulletinJun 19, 2026This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-061/25 12/17/25 DESCRIPTION If you encounter a…
01-002-26aService bulletinJun 12, 2026This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 01-002/26 01/07/26 DESCRIPTION Some v…
SA-026-26Service bulletinApr 16, 2026This Service Alert supersedes the previously issued M-Tip(s) listed below. The changes are noted in Red text. MT-002/19 09/30/19 and 12/19/1…

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.

Photo: Christian Buehner / Unsplash

Common questions

Source: NHTSA, 49 CFR 579.5

Is Mazda MSP66 a recall?

No. A service campaign 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 MSP66 repair free?

A service campaign 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 MSP66 cover?

The manufacturer filed it against 5 model years: 2026 Mazda CX-70, 2025 Mazda CX-70, 2026 Mazda CX-90, 2025 Mazda CX-90, 2024 Mazda CX-90. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: built 27 Dec 2022 – 17 Nov 2025; built 5 Dec 2023 – 17 Nov 2025 — the build date is on the certification label in the driver’s door jamb.