how to fix the P0730 code on Tesla Model S Plaid/Refresh (2021-present)?

Learn how to diagnose and fix P0730 transmission issues in Tesla Model S Plaid/Refresh. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the vehicle's battery to avoid any electrical shocks or shorts.

2. Transmission Fluid Inspection

• Tools Required: Transmission fluid dipstick (if applicable), funnel.
• Remove the transmission dipstick (if equipped) to check the fluid level.
• If the fluid is low, add the manufacturer-recommended transmission fluid until it reaches the appropriate level.
• Inspect the fluid color; if it appears dark or burnt, a fluid change may be necessary.

3. Electrical Connections Check

• Tools Required: Multimeter, socket set.
• Locate the TCM and inspect the wiring harness and connectors for signs of wear or corrosion.
• Use a multimeter to check for continuity and proper voltage at the TCM connectors.
• Repair or replace any damaged wiring or connectors as necessary.

4. Reprogram or Update TCM

• Tools Required: Diagnostic tool capable of updating Tesla software.
• Connect the diagnostic tool to the vehicle and check for available software updates for the TCM.
• If an update is available, follow the instructions on the tool to reprogram the TCM.
• Clear the fault codes and perform a test drive to monitor performance.

5. Final Assembly

• Reconnect the vehicle's battery.
• Ensure all components are securely fastened and any tools used are removed from the work area.