how to fix P0700 code on Tesla Model Y Current (2020-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the negative terminal of the battery to prevent electrical shorts.

2. Transmission Fluid Check

• Locate the transmission fluid dipstick (if equipped) or access the fill plug.
• Remove the dipstick or fill plug and check the fluid level; it should be within the specified range.
• If low, add the manufacturer-recommended transmission fluid until the correct level is reached.

3. Inspect Transmission Control Module (TCM)

• Remove any covers or panels to access the TCM.
• Check the wiring harness and connectors for corrosion, damage, or loose connections.
• Clean any corroded contacts with electrical cleaner and reconnect securely.

4. Clear Codes and Test Drive

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0700 code.
• Start the vehicle and take it for a test drive to ensure proper operation of the transmission and check for any reoccurrence of the code.

5. Replace TCM (if necessary)

• If the P0700 code returns and all other checks are satisfactory, consider replacing the TCM.
• Disconnect the battery.
• Unplug the TCM from its harness.
• Remove the mounting bolts and take out the old TCM.
• Install the new TCM, securing it with bolts and reconnecting the harness.
• Reconnect the battery and clear the codes.