my Tesla Model S Original (2012-2020) has a check engine light with the code C1101

Learn how to diagnose and fix C1101 stability control issue in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, and basic hand tools.
• Ensure the vehicle is parked on a level surface and the ignition is off.

2. Inspect Wheel Speed Sensors

1. Lift the vehicle using a jack and secure it with jack stands.
2. Remove the wheel to access the wheel speed sensor.
3. Disconnect the sensor's electrical connector.
4. Inspect the sensor for physical damage or debris.
5. Clean the sensor mounting area and connector pins with electrical contact cleaner.

3. Test Wheel Speed Sensors

1. Set the multimeter to the resistance setting.
2. Measure the resistance at the sensor terminals; compare the readings to manufacturer specifications.
3. If the readings are outside specifications, replace the wheel speed sensor.

4. Check Wiring and Connectors

1. Inspect the wiring harness leading to the wheel speed sensor for signs of wear or damage.
2. Use a multimeter to check for continuity between the sensor and the vehicle's control module.
3. Repair or replace damaged wiring as necessary.

5. Reset the Code

1. Reconnect all electrical connectors securely.
2. Reinstall the wheel and lower the vehicle.
3. Use the OBD-II scanner to clear the C1101 code from the vehicle's computer.