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

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

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, multimeter, torque wrench, engine oil, VVT solenoid, and gaskets.
• Disconnect the negative battery terminal.
• Allow the engine to cool before starting work.

2. Inspect and Replace Engine Oil

• Check the engine oil level using the dipstick.
• If the oil is low or dirty, drain the old oil using an oil drain pan.
• Replace with the recommended oil type and viscosity for the Genesis G70 (consult the owner’s manual).
• Replace the oil filter as necessary.

3. Inspect and Replace VVT Solenoid

• Locate the VVT solenoid, typically near the engine cover.
• Disconnect the electrical connector from the solenoid.
• Remove the mounting bolts using a socket set.
• Replace the VVT solenoid with a new one, ensuring proper alignment.
• Reinstall the mounting bolts to the manufacturer's torque specifications (typically 8-10 ft-lbs).

4. Verify Camshaft Timing

• Remove the engine cover to access the timing chain/belt.
• Check the timing marks on the camshaft and crankshaft to ensure they align correctly.
• If misaligned, follow the manufacturer’s service manual to adjust the timing.

5. Reconnect and Test

• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature.
• Use the OBD-II scanner to check for any remaining codes and clear the P0021 code.
• Test drive the vehicle to ensure proper operation and monitor for engine performance.