how to troubleshoot P0302 code on my Volkswagen Golf MK7.5 (2020-Present)

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench
• Remove the ignition coil from cylinder 2.
• Remove the spark plug using a spark plug socket and inspect for fouling or damage.
• If the spark plug is worn, replace it with a new one, ensuring it matches manufacturer specifications (typically gap around 0.028-0.032 inches).
• Torque the new spark plug to the manufacturer's specification (usually around 15 lb-ft).
• Reinstall the ignition coil.

3. Check and Replace Ignition Coil

• If the spark plug is in good condition, test the ignition coil for proper operation using an ohmmeter.
• If faulty, remove the old ignition coil and replace it with a new one, ensuring it is seated correctly.

4. Inspect Fuel Injector

• Disconnect the fuel injector connector and remove the fuel line carefully.
• Remove the fuel injector from cylinder 2 using appropriate tools.
• Clean the injector or replace it if it’s clogged or defective.
• Reinstall the injector, ensuring proper sealing and connection.

5. Address Compression Issues

• If compression is low, consider performing a leak-down test.
• If a leak is detected, further inspection of the piston rings or valves may be required.