P05A0 on Mazda vehicles
P05A0 is named on 6 Mazda model years (2019–2022): 11 manufacturer filings and 0 owner reports in NHTSA’s files, across CX-30, Mazda3, MX-30.
Which Mazda model years name P05A0
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2021 Mazda CX-30 | Power Train | 2 | — |
| 2021 Mazda Mazda3 | Power Train | 2 | — |
| 2020 Mazda CX-30 | Power Train | 2 | — |
| 2020 Mazda Mazda3 | Power Train | 2 | — |
| 2019 Mazda Mazda3 | Power Train | 2 | — |
| 2022 Mazda MX-30 | Electrical System | 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 P05A0
Source: NHTSA manufacturer communicationsBulletins and campaigns Mazda filed with NHTSA whose summary names P05A0. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 01-009-21-3799 Service bulletin2021-04-12 · Power Train
- Some vehicles may exhibit that the active air shutter is working, but DTC P05A0:00 (Active air shutter: Opening angle abnormality (sticking)) is stored in memory. This is caused by improper control software of the PCM detecting the DTC immediately without performing the failsafe operation. When the active air shutter detects unusual torque, it is designed to repeat the open/close cycles up to thre
- 09-048-22 Service bulletin2022-12-13 · Electrical System
- Some vehicles may exhibit the following symptoms with DTC P05A0:00 (Active air shutter and the opening angle abnormality (sticking)) stored in memory. Symptom 1 [Mazda3 and CX-30]: The active air shutter is working, but DTC P05A0:00 is stored in memory. Cause 1: This is caused by improper control software of the PCM detecting the DTC immediately without performing the failsafe operation. Whe
What P05A0 means
Source: SAE J2012 / OBD-IIP05A0 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 P05A0 a known problem on Mazda vehicles?
It is a documented one: NHTSA's files hold 11 manufacturer filings and 0 owner reports naming P05A0 on 6 Mazda model years (2019–2022). 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 P05A0 appear on most?
2021 CX-30 (2 documents), 2020 CX-30 (2 documents), 2021 Mazda3 (2 documents).
Does P05A0 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.