how to fix P0746 code in Tesla Outback 6th Generation (2020-2024)

Learn how to diagnose and fix P0746 transmission issues in Tesla Outback (2020-2024). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Solution

1. Preparation

• Gather tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to prevent electrical shock.

2. Fluid Inspection and Replacement

• Sub-step 1: Remove the transmission fluid dipstick and check the fluid level; add fluid if low (use manufacturer-approved fluid).
• Sub-step 2: If the fluid is discolored or has a burnt smell, drain the old fluid using a fluid pump or drain plug.
• Sub-step 3: Replace with fresh transmission fluid as per the manufacturer's specifications.

3. Replace Transmission Fluid Temperature Sensor

• Sub-step 1: Locate the transmission fluid temperature sensor (usually found on the transmission body).
• Sub-step 2: Disconnect the wiring connector from the sensor.
• Sub-step 3: Remove the sensor using a socket wrench (check for torque specifications in the service manual).
• Sub-step 4: Install the new sensor and reconnect the wiring harness.

4. Check and Repair Wiring

• Sub-step 1: Inspect the wiring harness connected to the transmission for any signs of damage or corrosion.
• Sub-step 2: Repair or replace any damaged wires, ensuring secure connections.

5. Reconnect Battery and Clear Codes

• Sub-step 1: Reconnect the battery terminals securely.
• Sub-step 2: Use the OBD-II scanner to clear the P0746 code and any related codes.