how to fix P0021 code in Tesla Outback 5th Generation (2015-2019)

Learn how to diagnose and fix P0021 camshaft timing issue in Tesla Outback 5th Generation. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to avoid electrical shorts.
• Ensure the engine is cool before starting work.

2. Inspect and Replace Engine Oil

• Sub-steps:
  • Drain the old engine oil using an oil catch pan.
  • Replace the oil filter with a new one.
  • Fill the engine with manufacturer-recommended oil type and viscosity (e.g., 0W-20).
• Tools Required: Oil catch pan, socket set, oil filter wrench.
• Safety Warnings: Allow the engine to cool before draining oil.

3. Replace Camshaft Position Sensor

• Sub-steps:
  • Locate the camshaft position sensor (typically near the camshaft or valve cover).
  • Disconnect the electrical connector from the sensor.
  • Remove the mounting bolts and take out the old sensor.
  • Install the new sensor and secure it with bolts; reconnect the electrical connector.
• Tools Required: Socket set, screwdriver.
• Safety Warnings: Ensure the battery is disconnected throughout the replacement process.

4. Replace Variable Valve Timing (VVT) Solenoid

• Sub-steps:
  • Locate the VVT solenoid, usually on the engine’s cylinder head.
  • Disconnect the electrical connector and remove the mounting bolts.
  • Take out the old solenoid and install the new one, securing it with bolts and reconnecting the electrical connector.
• Tools Required: Socket set, torque wrench.
• Safety Warnings: Use appropriate torque settings as per manufacturer specifications to avoid damage.

5. Verify Timing Chain/Belt Alignment

• Sub-steps:
  • Remove any covers obstructing the timing chain/belt view.
  • Check alignment marks on the crankshaft and camshaft to ensure timing is correct.
  • If misaligned, replace the timing chain/belt and adjust as necessary.
• Tools Required: Timing tool set, socket set.
• Safety Warnings: Follow the manufacturer's specifications for timing adjustments to prevent engine damage.