U019F on Mazda vehicles
U019F is named on 5 Mazda model years (2024–2026): 11 manufacturer filings and 0 owner reports in NHTSA’s files, across CX-70, CX-90.
Which Mazda model years name U019F
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2025 Mazda CX-70 | Engine | 3 | — |
| 2025 Mazda CX-90 | Engine | 3 | — |
| 2024 Mazda CX-90 | Engine | 3 | — |
| 2026 Mazda CX-70 | Engine | 1 | — |
| 2026 Mazda CX-90 | 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 U019F
Source: NHTSA manufacturer communicationsBulletins and campaigns Mazda filed with NHTSA whose summary names U019F. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PF-24-05 Other2024-05-10 · Engine
- The CX-90 and CX-70 PHEV is equipped with two electric water pumps that look similar but have different part numbers and functionalities. CAUTION: If the wrong water pump is ordered or they are installed reversed, DTC U019F could be set.
- SA-029-24 Other2024-05-10 · Engine
- The CX-90 and CX-70 PHEV are equipped with two electric water pumps that look similar but have different part numbers. CAUTION: If the wrong water pump is ordered or they are reversed, DTC U019F could be set.
- SA-059-26 Service bulletin2026-09-10 · Engine
- This 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-90 and CX-70 PHEV are equipped with two electric water pumps that look similar but have different part numbers. CAUTION: If the wrong water pump is ordered or they are reversed, DTC U019F could be set.
What U019F means
Source: SAE J2012 / OBD-IIU019F 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 U019F a known problem on Mazda vehicles?
It is a documented one: NHTSA's files hold 11 manufacturer filings and 0 owner reports naming U019F on 5 Mazda model years (2024–2026). 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 U019F appear on most?
2025 CX-70 (3 documents), 2025 CX-90 (3 documents), 2024 CX-90 (3 documents).
Does U019F 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.