how to address P0021 camshaft timing code in Tesla Outback 4th Generation (2010-2014)

Learn how to diagnose and fix P0021 camshaft timing code in Subaru Outback 2010-2014. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to prevent electrical short circuits.

2. Change Engine Oil and Filter

• Sub-steps:
  1. Raise the vehicle using a jack and secure with jack stands.
  2. Drain the old engine oil using a drain pan.
  3. Replace the oil filter with a new one, ensuring the rubber gasket is lubricated.
  4. Refill the engine with the manufacturer-recommended oil (typically 5W-30 or 0W-20).
• Tools Required: Oil wrench, socket set, drain pan.
• Safety Warnings: Allow the engine to cool before performing this operation to avoid burns.

3. Inspect and Replace VVT Solenoid

• Sub-steps:
  1. Locate the VVT solenoid (usually near the camshaft).
  2. Disconnect the electrical connector from the solenoid.
  3. Remove the mounting bolts and take out the solenoid.
  4. Install the new VVT solenoid and secure it with bolts.
  5. Reconnect the electrical connector.
• Tools Required: Socket set, torque wrench.
• Safety Warnings: Ensure the engine is off and cool before working on the engine components.

4. Check and Adjust Camshaft Timing

• Sub-steps:
  1. Remove any components obstructing access to the timing cover.
  2. Use a timing light to check the camshaft timing marks against the crankshaft.
  3. If misaligned, adjust the timing by loosening the camshaft bolts and repositioning it according to manufacturer specifications.
  4. Re-torque the camshaft bolts to the specified torque (typically 30-40 ft-lbs).
• Tools Required: Timing light, socket set, torque wrench.
• Safety Warnings: Ensure all tools are cleared from the engine bay before starting the vehicle.