my Tesla Model 3 Original (2017-2023) shows C1234 code what does it mean

Solution

1. Preparation

• Gather necessary tools and parts for the repair.
• Ensure the vehicle is parked on a level surface and the battery is disconnected for safety.

2. Inspect and Clean ABS Sensors

• Sub-steps:
  1. Locate the ABS wheel speed sensors at each wheel hub.
  2. Remove the sensor bolts using a socket set.
  3. Carefully pull out the sensors and inspect for dirt or debris.
  4. Clean the sensor surfaces with a soft cloth and appropriate cleaner.
  5. Reinstall the sensors and secure them with bolts, tightening to manufacturer specifications.

3. Check Wiring and Connectors

• Sub-steps:
  1. Visually inspect all wiring leading to the ABS module for signs of wear or damage.
  2. Disconnect the connectors at the ABS module and inspect for corrosion or bent pins.
  3. Repair or replace any damaged wiring or connectors as needed, ensuring proper sealing to prevent moisture ingress.

4. Test Wheel Speed Sensors

• Sub-steps:
  1. Reconnect the vehicle’s battery.
  2. Use a multimeter to check the voltage output of each wheel speed sensor while the wheels are turned manually.
  3. Compare readings with manufacturer specifications; a significant deviation indicates a faulty sensor.

5. Clear Codes and Test Drive

• Sub-steps:
  1. Use an OBD-II scanner to clear the C1234 code from the vehicle's computer.
  2. Take the vehicle for a test drive to verify that the issue has been resolved and no new DTCs appear.

Tools Required:

• OBD-II scanner
• Socket set
• Multimeter
• Soft cloth
• Appropriate cleaner

Parts Required:

• Wheel speed sensors (if faulty)
• Wiring harness (if damaged)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on electrical systems.
• Allow the vehicle to cool down before inspecting brake components to avoid burns.