how to fix P0021 timing over-advanced code in Genesis G70 IG (2017-2023)?

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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery to ensure safety while working on electrical components.

2. Change Engine Oil and Filter

• Step 1: Drain the old engine oil by removing the oil drain plug. Allow oil to fully drain.
• Step 2: Replace the oil filter with a new one, ensuring the rubber O-ring is lubricated.
• Step 3: Reinstall the oil drain plug and tighten to the manufacturer's specified torque (typically around 25-30 Nm).
• Step 4: Refill the engine with new oil that meets Hyundai’s specifications (5W-30 or as recommended).

3. Replace VVT Solenoid

• Step 1: Locate the VVT solenoid, typically found on the engine near the camshaft.
• Step 2: Disconnect the electrical connector from the solenoid.
• Step 3: Remove the mounting bolts securing the VVT solenoid using a socket set.
• Step 4: Replace the old solenoid with a new one, ensuring proper alignment and sealing.
• Step 5: Reconnect the electrical connector and run the engine to check for leaks.

4. Inspect and Adjust Timing Chain/Belt

• Step 1: Remove any necessary engine covers to access the timing chain/belt.
• Step 2: Check the alignment of timing marks on the camshaft and crankshaft sprockets.
• Step 3: If misaligned, adjust by loosening the tensioner and repositioning the chain/belt according to manufacturer specifications.
• Step 4: Re-tighten the tensioner and ensure that all timing marks are correctly aligned.

5. Reconnect Battery

• Reconnect the battery terminals securely.
• Ensure all tools are removed from the engine bay before starting the vehicle.