U0442 on Mazda vehicles
U0442 is named on 10 Mazda model years (2018–2025): 14 manufacturer filings and 0 owner reports in NHTSA’s files, across CX-5, CX-3, MX-5.
Which Mazda model years name U0442
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2018 Mazda CX-5 | Engine | 4 | — |
| 2019 Mazda CX-5 | Engine | 2 | — |
| 2025 Mazda CX-5 | Power Train | 1 | — |
| 2024 Mazda CX-5 | Power Train | 1 | — |
| 2023 Mazda CX-5 | Engine | 1 | — |
| 2022 Mazda CX-5 | Power Train | 1 | — |
| 2021 Mazda CX-5 | Power Train | 1 | — |
| 2020 Mazda CX-5 | Engine | 1 | — |
| 2019 Mazda CX-3 | Engine | 1 | — |
| 2019 Mazda MX-5 | Engine | 1 | — |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
Mazda filings that name U0442
Source: NHTSA manufacturer communicationsBulletins and campaigns Mazda filed with NHTSA whose summary names U0442. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 01-015-18-3513a Service bulletin2018-10-23 · Engine
- Some vehicles may experience a lack of power and the check engine light on with DTC P061B:00 and U0401:00 stored in the PCM memory when engine cranking is interrupted and on A/T vehicles, DTC U0442:00 is also stored. This concern most likely occurs when the brake pedal is released during engine cranking. DTC P061B:00 - [PCM] Internal control module torque calculation performance problem. DTC U0401
- SA-011-19 Service bulletin2019-02-28 · Power Train
- Some vehicles may display some (or all) of the following symptoms: Check engine light on wit DTC P061B, Surging on acceleration, Transmission will not shift past 4th gear, Various U codes (U0401 ABS, U0401, U0415 FSC, U0301, U0316 SBS/MRCC, U0442 TCM) may be set.
- SA-011-19a Service bulletin2019-05-13 · Power Train
- Some vehicles may display some (or all) of the following symptoms: Check engine light on wit DTC P061B Surging on acceleration Transmission will not shift past 4th gear Various U codes (U0401 ABS, U0401, U0415 FSC, U0301, U0316 SBS/MRCC, U0442 TCM) may be set
- SA-011-26 Service bulletin2026-02-26 · Engine
- Some vehicles may display some (or all) of the following symptoms: • Check engine light on with DTC P061B • Light increase in engine rpms during acceleration • Transmission will not shift past 4th gear • Various U codes (U0401 ABS, U0401, U0415 FSC, U0301, U0316 SBS/MRCC, U0442 TCM) may be set
What U0442 means
Source: SAE J2012 / OBD-IIU0442 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
A stored code names the test that failed, never the part that caused it. The record above is what Mazda and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs U0442 a known problem on Mazda vehicles?
It is a documented one: NHTSA's files hold 14 manufacturer filings and 0 owner reports naming U0442 on 10 Mazda model years (2018–2025). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Mazda models does U0442 appear on most?
2018 CX-5 (4 documents), 2019 CX-5 (2 documents), 2019 CX-3 (1 document).
Does U0442 on a Mazda mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.