P0750 Shift Solenoid A Malfunction

P0750 points to shift solenoid A malfunction. The transmission controller detected an issue with the solenoid used to route hydraulic pressure for gear changes.

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 the transmission because of P0750 alone; solenoid command, wiring, hydraulic pressure, and fluid condition must be checked first.

Symptoms of P0750

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 P0750

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

Scan enhanced transmission data for commanded gear, actual gear, solenoid A command, input speed, output speed, and ratio errors.
Check fluid level and condition, solenoid A circuit wiring, connector pins, internal harness, and transmission connector sealing.
Review whether the fault occurs in one gear, during a specific shift, or immediately at key-on.

Related OBD-II codes

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