P0875
Transmission Fluid Pressure Sensor/Switch D Circuit
Transmission controls
Generic OBD-II
Medium
What it means
P0875 indicates a fault in the transmission fluid pressure sensor/switch 'D' circuit. That sensor reports internal line pressure, so a bad signal can make the transmission shift harshly or slip. Low fluid, wiring problems, or a failing sensor are the usual causes. The engine starts and runs normally, but slipping shouldn't be ignored.
Medium
Can I keep driving? Usually — but harsh, erratic, or slipping shifts mean you should drive gently and get it checked soon to avoid transmission wear.
Common symptoms
What you'll notice
- Check-engine light on
- Harsh or erratic shifting
- Transmission slipping
- Possible limp mode
Common causes
Most likely first
- Low or degraded transmission fluidLikely
- Faulty fluid pressure sensor/switch 'D'Common
- Wiring or connector fault at the sensorCommon
- Loose or corroded electrical connectionsLess often
- Faulty transmission control module (TCM) — least likelyLess often
How to diagnose & fix
Work through it in order
- Check transmission fluid level and condition first.
- Inspect the sensor 'D' connector and wiring for damage or corrosion.
- Test the sensor's signal against spec and compare to actual line pressure.
- Replace the fluid pressure sensor/switch if it fails.
- If the sensor is good, inspect the valve body and TCM. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0875?+
The engine runs normally, but slipping or harsh shifts can wear the transmission. Drive gently and get it checked soon, especially if the transmission slips.
Can I just clear P0875?+
It returns until the fluid, wiring, or sensor issue is fixed. Check the fluid level first.
Related codes
Often seen with P0875
Read & clear P0875 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX