how to fix P0021 code in Volvo XC60 536 (2017-Present)

Learn how to diagnose and fix P0021 VVT issue in Volvo XC60. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety during repairs.
• Raise the vehicle and secure it on jack stands if working underneath.

2. Inspect and Replace VVT Solenoid

• Tools Required: Wrench set, socket set, torque wrench.
• Sub-steps:
  1. Locate the VVT solenoid, typically situated near the camshaft.
  2. Disconnect the electrical connector and remove the retaining bolts.
  3. Carefully remove the solenoid and inspect the O-ring for wear.
  4. If damaged, replace the solenoid with a new one.
  5. Reinstall the solenoid and torque the bolts to the manufacturer’s specifications.

3. Check and Adjust Timing Chain/Belt

• Tools Required: Timing tool kit, torque wrench.
• Sub-steps:
  1. Remove the engine cover to access the timing chain/belt.
  2. Use the timing tool kit to check the alignment of the timing marks.
  3. If misaligned, adjust the timing chain/belt according to manufacturer specifications.
  4. Reassemble any components removed and ensure all fasteners are torqued to specification.

4. Change Engine Oil and Filter

• Tools Required: Oil filter wrench, socket set.
• Sub-steps:
  1. Drain the old engine oil and replace the oil filter.
  2. Refill with the correct type and amount of engine oil as per manufacturer specifications.
  3. Run the engine for a few minutes and check for leaks.