how to fix P0021 code in Renault Clio V (2019-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery before starting work.

2. Inspect and Replace VVT Solenoid

• Tools Required: Socket set, torque wrench, ratchet, O-ring pick, clean cloth.
• Steps:
  1. Locate the VVT solenoid (usually near the camshaft).
  2. Disconnect the electrical connector from the solenoid.
  3. Remove the retaining bolts using a socket set.
  4. Carefully pull the solenoid out; inspect the O-ring for damage.
  5. If damaged, replace the O-ring and install the new solenoid.
  6. Reattach the electrical connector and torque the bolts to manufacturer specifications.

3. Inspect Timing Chain/Belt

• Tools Required: Timing tool kit, socket set, torque wrench.
• Steps:
  1. Remove any components obstructing access to the timing chain/belt (e.g., engine covers).
  2. Use a timing tool kit to align the camshaft and crankshaft timing marks.
  3. Inspect the timing chain/belt for signs of wear or misalignment.
  4. If misaligned, adjust or replace the timing chain/belt as necessary.
  5. Reassemble any removed components, ensuring proper torque specifications.

4. Oil Flow Check

• Tools Required: Oil pressure gauge, wrench set.
• Steps:
  1. Locate the oil pressure sending unit and remove it.
  2. Connect the oil pressure gauge to the engine.
  3. Start the engine and check the oil pressure; it should meet manufacturer specifications.
  4. If the pressure is too low, investigate oil pump issues or blockages in the oil passages.