P0752 Shift Solenoid A Stuck On

P0752 indicates shift solenoid A is stuck on. The transmission behavior suggests the solenoid remains applied when the controller expects it off.

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 replace only the solenoid without checking hydraulic contamination and valve-body sticking; a stuck-on symptom may be mechanical.

Symptoms of P0752

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 P0752

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

Monitor solenoid A command, actual gear, ratio calculation, shift timing, and pressure data during the affected shift.
Inspect for contaminated fluid, valve-body sticking, solenoid mechanical sticking, wiring shorts, or control-driver faults.
Check companion ratio and shift codes to understand which gear path is affected.

Related OBD-II codes

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