P0847
1 owner report and 140 manufacturer filings across 29 model years from Mazda, Scion.
Where P0847 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2016 Mazda CX-5 | Power Train | 15 | — |
| 2016 Mazda Mazda3 | Equipment | 15 | — |
| 2016 Mazda Mazda6 | Equipment | 15 | — |
| 2016 Mazda CX-3 | Power Train | 8 | — |
| 2018 Mazda CX-3 | Power Train | 5 | — |
| 2017 Mazda CX-3 | Power Train | 5 | — |
| 2018 Mazda CX-5 | Power Train | 5 | — |
| 2017 Mazda CX-5 | Power Train | 5 | — |
| 2018 Mazda CX-9 | Power Train | 5 | — |
| 2017 Mazda CX-9 | Power Train | 5 | — |
| 2016 Mazda CX-9 | Power Train | 5 | — |
| 2018 Mazda Mazda3 | Power Train | 5 | — |
| 2017 Mazda Mazda3 | Power Train | 5 | — |
| 2018 Mazda Mazda6 | Power Train | 5 | — |
| 2017 Mazda Mazda6 | Power Train | 5 | — |
| 2019 Mazda CX-3 | Power Train | 4 | — |
| 2019 Mazda CX-5 | Power Train | 4 | — |
| 2019 Mazda CX-9 | Power Train | 4 | — |
| 2019 Mazda Mazda6 | Power Train | 4 | — |
| 2021 Mazda CX-5 | Power Train | 2 | — |
| 2020 Mazda CX-5 | Power Train | 2 | — |
| 2021 Mazda CX-9 | Power Train | 2 | — |
| 2020 Mazda CX-9 | Power Train | 2 | — |
| 2016 Mazda MX-5 | Engine | 2 | — |
| 2021 Mazda Mazda6 | Power Train | 2 | — |
| 2020 Mazda Mazda6 | Power Train | 2 | — |
| 2021 Mazda CX-3 | Power Train | 1 | — |
| 2020 Mazda CX-3 | Power Train | 1 | — |
| 2016 Scion iA | Engine | — | 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
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
When at home used OBD2 scan tool and got codes P0847 C1031 U0401 B13D3 Cleared codes and unplugged 12 volt battery to reset system
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P0847. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- 05-002-232023-05-17 · Power Train — Automatic Transmission — Control Module (Tcm/Pcm/Tecm)
- Some vehicles may experience the check engine light and automatic transaxle warning light ON with one or more of these DTCs stored in the TCM memory (P0842, P0847, P0872, P0877, P0780, P1738).
- 05-001-21-38262021-09-03 · Power Train
- Some vehicles may experience the check engine light and automatic transaxle warning light ON with one or more of these DTCs stored in the TCM memory (P0842, P0847, P0872, P0877, P0780, P1738). P0842:00 - Oil pressure switch No. 1 (oil pressure switch B) stuck on, P0847:00 - Oil pressure switch No. 2 (oil pressure switch A) stuck on, P0872:00 - Oil pressure switch No. 3 (oil pressure switch A) stuc
- 05-003-20-37252020-07-09 · Power Train
- Some vehicles may experience the check engine light and automatic transaxle warning light ON with one or more of these DTCs stored in the TCM memory (P0842, P0847, P0872, P0877, P0780, P1738). This is caused by the oil pressure switch A and/or B at the control valve body temporarily or permanently getting stuck due to contamination entering the passage. To correct the problem, some mass production
- 05-004-19-34662019-05-20 · Power Train
- Some vehicles may experience the check engine light and automatic transaxle warning light ON with one or more of these DTCs stored in the TCM memory (P0842, P0847, P0872, P0877, P0780, P1738). P0842:00 - Oil pressure switch No. 1 (oil pressure switch B) stuck on P0847:00 - Oil pressure switch No. 2 (oil pressure switch A) stuck on P0872:00 - Oil pressure switch No. 3 (oil pressure switch A) stu
- 05-004-18-34662018-04-16 · Engine And Engine Cooling
- Some vehicles may experience the check engine light and automatic transaxle warning light ON with one or more of these DTCs stored in the TCM memory (P0842, P0847, P0872, P0877, P0780, P1738). P0842:00 - Oil pressure switch No. 1 (oil pressure switch B) stuck on P0847:00 - Oil pressure switch No. 2 (oil pressure switch A) stuck on P0872:00 - Oil pressure switch No. 3 (oil pressure switch A) stuck
- 05-005-16-32182016-07-07 · Power Train — Automatic Transmission
- SOME VEHICLES MAY EXPERIENCE THE CHECK ENGINE LIGHT AND AUTOMATIC TRANSAXLE WARNING LIGHT ON WITH ONE OR MORE OF THESE DTCS STORED IN THE TCM MEMORY (P0842, P0847, P0872, P0877, P0780, P1738).P0842:00 - OIL PRESSURE SWITCH NO. 1 (OIL PRESSURE SWITCH B) STUCK ONP0847:00 - OIL PRESSURE SWITCH NO. 2 (OIL PRESSURE SWITCH A) STUCK ONP0872:00 - OIL PRESSURE SWITCH NO. 3 (OIL PRESSURE SWITCH A) STUCK
What P0847 means
Source: SAE J2012 / OBD-IIP0847 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 P0847
Source: NHTSA files and the OBD-II standardCan I keep driving with P0847 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.