P0871
3 owner reports and 20 manufacturer filings across 14 model years from Chevrolet, Ram, Subaru.
Where P0871 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2017 Chevrolet Spark | Power Train | 3 | — | |
| 2016 Chevrolet Spark | Power Train | 3 | — | |
| 2022 Subaru Outback | Electrical System | 2 | 1 | Battery → |
| 2019 Chevrolet Spark | Power Train | 2 | — | |
| 2018 Chevrolet Spark | Power Train | 2 | — | |
| 2019 Ram 3500 | Service Brakes | 1 | 1 | Brake pads → |
| 2022 Ram 2500 | Power Train | 1 | — | |
| 2021 Ram 2500 | Service Brakes | 1 | — | Brake pads → |
| 2020 Ram 2500 | Power Train | 1 | — | |
| 2019 Ram 2500 | Exterior Lighting | 1 | — | Headlight assembly → |
| 2022 Ram 3500 | Service Brakes | 1 | — | Brake pads → |
| 2021 Ram 3500 | Power Train | 1 | — | |
| 2020 Ram 3500 | Power Train | 1 | — | |
| 2018 Ram 3500 | Power Train | — | 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.
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P0871 by make
The same record, one make at a time: the model years, bulletins and owner reports that name P0871 on that maker’s vehicles.
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.
The battery was fine, charging, but the car threw a Code: P0871 Transmission Fluid Pressure Sensor Switch
While entering the interstate highway and accelerating to merge into traffic the transmission would not shift properly and check engine light came with code p0871
20 manufacturer filings name P0871. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P0871.
- S2121000008RevC Service bulletin2022-06-02 · Power Train
- Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P0765 ? UD Solenoid Circuit, P0871 ? Transmission Fluid Pressure Sensor/Switch ?C? Circuit Performance, and/or P0755 ? 2C Solenoid Circuit, Set.
- 16-135-21R Service bulletin2021-11-05 · Electrical System
- This bulletin announces the availability of a Transmission Control Module (TCM) reprogramming file to address DTC P0871.
- 16-134-21 Service bulletin2021-10-05 · Equipment
- This bulletin announces additional diagnostic information concerning DTC #P0871. (Outback Wilderness)
- PIP5521B Service bulletin2019-03-20 · Equipment — Other — Owners/Service/Other Manual
- This Preliminary information communicates to the dealer technician if they find P0871 or P2714 is set in the TCM to refer to bulletin 19-NA-053 for updated information regarding codes P0871 or P2714 set in the TCM.
- PIP5521A Service bulletin2019-02-08 · Power Train
- This Preliminary information communicates to the dealer technician if they find P0871 or P2714 is set in the TCM to clear the codes and retest. If the codes do not reset dealer is to release the vehicle to the customer. If the codes reset the dealer technician is instructed to replace the transmission fluid pressure switch.
- PIP5521 Service bulletin2017-09-14 · Equipment Adaptive/Mobility
- This Preliminary information communicates to the dealer technician if they find P0871 or P2714 is set in the TCM to clear the codes and retest. If the codes do not reset dealer is to release the vehicle to the customer. If the codes reset the dealer technician is instructed to replace the transmission or valve body assembly based on the model year of the vehicle.
What P0871 means
Source: SAE J2012 / OBD-IIP0871 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 P0871
Source: NHTSA files and the OBD-II standardCan I keep driving with P0871 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. 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.