P2BF6
0 owner reports and 8 manufacturer filings across 4 model years from Mazda.
Where P2BF6 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2020 Mazda Mazda3 | Engine And Engine Cooling | 3 | — |
| 2019 Mazda Mazda3 | Electrical System | 3 | — |
| 2020 Mazda CX-30 | Power Train | 1 | — |
| 2024 Mazda CX-5 | Equipment | 1 | — |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
What it gets filed under
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P2BF6. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- SA-056-232023-09-28 · Equipment — Other — Owners/Service/Other Manual
- Permanent updates to these procedures in the WSM are in progress and once complete this Service Alert will be unpublished. While these updates are being completed please see the procedures for DTC's P2BF5, P2BF6 and P2BF7 below.
- 01-004-20-3684b2020-07-16 · Power Train — Automatic Transmission
- Some customers may experience the master warning light turning on and a lack of power with DTC P2BF6:00 (Exhaust shutter valve position sensor circuit low input (1DC)) stored in memory. This is caused by improper logic written in the PCM for the exhaust shutter valve position sensor.
- 01-004-20-3684a2020-06-22 · Engine And Engine Cooling
- Some customers may experience the master warning light turning on and a lack of power with DTC P2BF6:00 (Exhaust shutter valve position sensor circuit low input (1DC)) stored in memory. The PCM software has been modified to avoid the unnecessary warning light illumination and power restriction with no modification to the cylinder deactivation function and the error detection logic has been chang
- 01-004-20-36842020-02-25 · Electrical System
- Some customers may experience the master warning light turning on and a lack of power with DTC P2BF6:00 (Exhaust shutter valve position sensor circuit low input (1DC)) stored in memory. The PCM software has been modified to avoid the unnecessary warning light illumination and power restriction with no modification to the cylinder deactivation function.
What P2BF6 means
Source: SAE J2012 / OBD-IIP2BF6 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. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P2BF6
Source: NHTSA files and the OBD-II standardCan I keep driving with P2BF6 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.