how to fix U0121 code in my Tesla Outback 6th Generation (2020-2024)

• •Check engine light illuminated
• •ABS warning light activated
• •Loss of traction control functionality
• •Erratic speedometer readings
• •Unresponsive braking system in certain scenarios

1. 1Scan the vehicle using an OBD-II scanner to confirm the U0121 code and check for any related codes.
2. 2Inspect the wiring harness and connectors between the ECM and ABS control module for damage, corrosion, or loose connections.
3. 3Test the ABS control module for proper operation using a multimeter.
4. 4Check the vehicle's battery voltage and ensure it is within specification (12.4V - 12.7V).
5. 5Inspect and clean ground connections related to the ECM and ABS systems.

After completing the repair, verify that the issue has been resolved:

• ✓Test the affected component to ensure it functions correctly
• ✓Check for any error codes or warning lights
• ✓Monitor the vehicle for a few days to ensure the issue does not recur

To prevent this issue from occurring again:

• •Follow the manufacturer's recommended maintenance schedule
• •Address warning signs early before they develop into major issues
• •Use quality parts and fluids recommended for your vehicle
• •Keep detailed records of all repairs and maintenance

• •OBD-II scanner
• •Multimeter
• •Socket set
• •Torque wrench
• •Wire brush
• •Electrical cleaner

• •ABS control module (if necessary)