Shift solenoid A performance or stuck off

Good morning. The code is for fluid contamination not allowing valve movement in the valve body. You will need to start with a transmission flush including replacement of the filter. I would also add some valve body modifier for movement of the valves in the valve body.

Roy

Diagnostic Aids:
If you clear DTC P0751, and then cannot reset DTC P0751, inspect for the following conditions:
- Fluid contamination
- Plugged fluid circuits
- Restricted fluid circuits

Refer to Shift Solenoid Valve State and Gear Patio.