P0871
Transmission Fluid Pressure Sensor/Switch C Circuit Range/Performance
Generic code
Transmission System
High severity
Hard repair
Free on OBD DashX
Want real-world data on P0871?
See which problems come with P0871, how often it shows up in other vehicles, and how to fix it — step by step.
- Real-world fix data
- How often it happens
- Step-by-step repairs
What P0871 means
- The fault code P0871 indicates that there is an issue with the circuit range or performance of the transmission fluid pressure (TFP) sensor/switch C. This may lead to transmission shifting issues or even transmission failure.
Possible symptoms
- Harsh or delayed shifting
- Transmission slipping
- Illuminated check engine light
- Transmission overheating
- Reduced fuel efficiency
Possible causes
- Faulty TFP sensor/switch C
- Corroded or damaged TFP sensor/switch C circuit wiring or connectors
- Defective transmission control module (TCM)
- Malfunctioning transmission fluid pump
Related parts
- Transmission Fluid Pressure Sensor: Gear fluid line delivers gear fluid/oil between the various gear parts that need lubrication. The Gear fluid line pressure Sensor monitors the fluid pressure in the line. Problems lead to difficulty in shifting gears
Possible solutions
- Replace the TFP sensor/switch C
- Inspect and repair any damaged or corroded TFP sensor/switch C circuit wiring or connectors
- Replace the TCM if necessary
- Replace the transmission fluid pump if diagnosed as faulty
Free on OBD DashX
P0871 on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P0871 No sign-up needed · available in 10 languagesScan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.