how to diagnose P0021 camshaft timing issue in Tesla Model S Plaid/Refresh (2021-present)?

Learn how to diagnose and fix P0021 camshaft timing issue in Tesla Model S Plaid. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's battery to ensure safety.
• Ensure the area is well-ventilated and free from obstructions.

2. Oil Change (if applicable)

• Drain Oil: Use a socket set to remove the oil drain plug and let the engine oil drain completely.
• Replace Oil Filter: Use an oil filter wrench to remove the old oil filter and install a new one.
• Add New Oil: Reinstall the drain plug and add new engine oil that meets manufacturer specifications.

3. Replace Camshaft Position Sensor (if faulty)

• Remove Engine Cover: Use a socket set to remove bolts securing the engine cover and lift it off.
• Disconnect Sensor Connector: Carefully unplug the electrical connector from the camshaft position sensor.
• Remove Sensor: Use the appropriate tool to unscrew and remove the faulty camshaft position sensor.
• Install New Sensor: Position the new sensor, screw it in place, and reconnect the electrical connector.

4. Inspect and Replace VVT Actuator (if necessary)

• Remove Necessary Components: Depending on accessibility, remove any components obstructing access to the VVT actuator.
• Disconnect Wiring: Carefully unplug electrical connectors from the VVT actuator.
• Remove VVT Actuator: Unscrew the actuator from its mounting location.
• Install New VVT Actuator: Position the new actuator and secure it with bolts, reconnecting all electrical connectors.

5. Reset Engine Control Module (ECM)

• Reconnect Battery: Reconnect the battery terminals.
• Clear Codes: Use the OBD-II scanner to clear any stored trouble codes.
• Start Engine: Allow the engine to run for a few minutes and check for any reoccurring codes.