Symptoms of P0875
- Harsh, delayed, or slipping shifts, or being stuck in one gear.
- Check-engine light, sometimes with limp-home mode.
- Flaring RPM or a shudder under load.
Common causes of P0875
- Low or degraded transmission fluid.
- A failing speed sensor, shift solenoid, or pressure-control circuit.
- Wiring, connector, or internal hydraulic/mechanical faults.
Useful checks before replacing parts
- Check pressure sensor D signal voltage, reference voltage, ground, connector condition, and continuity through the transmission case connector.
- Compare sensor D data with commanded gear, pressure-control commands, shift timing, slip, and fluid temperature.
- Inspect internal harness routing, fluid contamination at terminals, sensor mounting, and companion pressure or ratio codes.
Related OBD-II codes
These nearby transmission entries can help compare wording and pin down the fault area.