P0961 Pressure Control Solenoid A Control Circuit Range/Performance

P0961 indicates range or performance trouble in pressure control solenoid A control circuit. The solenoid circuit or pressure response is not behaving as expected.

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 assume an electrical coil failure from a performance code; hydraulic response and fluid condition also matter.

Symptoms of P0961

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 P0961

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, solenoid A duty cycle, actual or inferred pressure, shift timing, and slip data.
Inspect fluid condition, connector fit, internal harness, valve-body sticking, and solenoid response.
Check whether the fault appears only hot, cold, under high load, or during specific shifts.

Related OBD-II codes

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