P0936 Hydraulic Pressure Sensor Circuit Intermittent

P0936 indicates an intermittent hydraulic pressure sensor circuit fault. The pressure signal drops out, spikes, or becomes invalid only under some conditions.

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 clear intermittent pressure sensor codes without reproducing the dropout or unstable signal.

Symptoms of P0936

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 P0936

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

Graph pressure sensor data during pump operation, shift events, road vibration, hot operation, and harness movement.
Inspect connector locking, terminal tension, internal harness movement, fluid intrusion, heat sensitivity, and shared reference stability.
Compare intermittent signal loss with pressure-unit cycling, actuator commands, shift aborts, and freeze-frame voltage.

Related OBD-II codes

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