P0867 Transmission Fluid Pressure

P0867 indicates a transmission fluid pressure fault. The controller sees pressure behavior that does not match the expected operating state.

Code details

Generic OBD-II · P0

System: Transmission
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not authorize major transmission work without pressure data and checks for electrical pressure-control faults.

Symptoms of P0867

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 P0867

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

Compare commanded pressure, actual pressure if available, pressure-control solenoid command, slip, gear ratio, and fluid temperature.
Inspect fluid level and condition, filter restriction, pump operation, valve-body function, pressure sensor data, and related solenoid codes.
Identify whether symptoms are harsh shifts, delayed engagement, flare, limp mode, or pressure faults only under load.

Related OBD-II codes

These nearby transmission entries can help compare wording and pin down the fault area.