how to fix P0302 code on Volkswagen Golf Eighth Generation (2020-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Ensure the engine is cool before starting work.

2. Inspect and Replace Spark Plug

• Remove the engine cover if applicable.
• Locate and remove the ignition coil for cylinder 2.
  • Tools Required: Socket set.
• Remove the spark plug from cylinder 2 using a spark plug socket.
• Inspect the spark plug for signs of damage or wear.
• If damaged, replace with a new spark plug according to manufacturer specifications.
  • Torque Specification: Tighten to 22 ft-lbs (30 Nm) if applicable.
• Reinstall the ignition coil.

3. Test and Replace Ignition Coil

• If the spark plug is fine, test the ignition coil using a multimeter.
  • Resistance Specification: Typically, primary resistance should be around 0.5-1.5 ohms and secondary resistance around 6,000-15,000 ohms.
• If readings are out of specification, replace the ignition coil with a new one.
• Reassemble any components removed for access.

4. Inspect Fuel Injector

• Remove the intake manifold if necessary to access the fuel injector.
• Inspect the fuel injector for clogs or leaks.
• Clean or replace the fuel injector as needed.
  • Tools Required: Fuel injector cleaner kit if cleaning, or a new fuel injector if replacing.
• Reassemble the intake manifold.

5. Compression Test

• Perform a compression test on cylinder 2 to check the internal engine condition.
• If the compression is low, further investigation into the engine internals may be required (e.g., valve seals, piston rings).