how to fix P0021 code in Genesis G70 IG (2017-2023)

Learn how to diagnose and fix P0021 camshaft timing issue in Genesis G70 (2017-2023). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools: OBD-II scanner, socket set, multimeter, torque wrench, engine oil, and oil filter.
• Ensure the vehicle is on a level surface and securely raised if needed.

2. Check Engine Oil

• Sub-steps:
  1. Open the hood and check the engine oil level using the dipstick.
  2. If the oil level is low, add the recommended engine oil (refer to owner's manual).
  3. If the oil is dirty or has not been changed according to schedule, drain and replace the oil and filter.

3. Inspect and Replace VVT Solenoid

• Sub-steps:
  1. Disconnect the negative battery terminal.
  2. Locate the VVT solenoid (usually near the camshaft cover).
  3. Remove the electrical connector from the solenoid.
  4. Unscrew the solenoid and remove it from the engine.
  5. Install the new VVT solenoid, ensuring proper alignment and sealing.
  6. Reconnect the electrical connector.
  7. Reconnect the battery terminal.

4. Check Timing Chain/Belt

• Sub-steps:
  1. Remove any necessary covers to access the timing chain or belt.
  2. Inspect the timing chain/belt for signs of wear, stretching, or misalignment.
  3. If any issues are found, replace the timing chain/belt according to manufacturer specifications.
  4. Ensure proper tension is applied, following torque specifications.

5. Inspect Oil Flow

• Sub-steps:
  1. Remove the oil filter and inspect for debris.
  2. Use a pressure gauge to check oil pressure; replace oil pump if necessary.
  3. Clear any blockages in the oil passages leading to the VVT system.