how to fix P0750 code in Tesla Model S Plaid/Refresh (2021-present)

Learn how to diagnose and fix P0750 transmission shift solenoid issue in Tesla Model S Plaid. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts: OBD-II scanner, multimeter, socket set, torque wrench, replacement shift solenoid, transmission fluid.
• Ensure the vehicle is on a level surface and the engine is off before starting repairs.

2. Disconnect Battery

• Disconnect the negative terminal of the battery to prevent electrical shock.
• Wait for a few minutes to allow any residual electrical current to dissipate.

3. Remove Transmission Fluid

• Use a socket set to remove the transmission oil pan bolts.
• Carefully lower the oil pan and drain the old transmission fluid into a suitable container.

4. Replace Shift Solenoid

• Locate the transmission shift solenoid "A" on the transmission assembly.
• Disconnect the electrical connector from the solenoid.
• Remove the bolts securing the shift solenoid using the socket set.
• Install the new shift solenoid by reversing the removal steps.
  • Ensure the solenoid is seated properly.
  • Torque the bolts to the manufacturer's specifications.

5. Reassemble and Refill Transmission Fluid

• Clean the oil pan mating surface and replace the oil pan with a new gasket.
• Reinstall the oil pan and torque the bolts to the specified values.
• Refill the transmission fluid through the fill port with the recommended fluid type.

6. Reconnect Battery

• Reconnect the negative terminal of the battery securely.

7. Clear Error Codes

• Use the OBD-II scanner to clear the P0750 code and any other transmission-related codes.