how to fix P0302 misfire code on my Volkswagen Golf Seventh Generation (2013-2020)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, compression gauge.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery cable to avoid electrical shocks.

2. Inspect and Replace Spark Plug

• Remove the ignition coil cover if applicable.
• Use a socket set to remove the spark plug from cylinder 2.
• Inspect the spark plug for wear; replace if necessary with the manufacturer-recommended spark plug type.
• Torque the new spark plug to the manufacturer's specifications (typically around 25 Nm or 18 lb-ft).
• Reinstall the ignition coil.

3. Test and Replace Ignition Coil

• Disconnect the wiring harness from the ignition coil.
• Use a multimeter to check the coil's primary and secondary resistance against manufacturer specifications.
• If the coil is faulty, replace it with a new ignition coil.
• Reconnect the wiring harness and ensure it is secure.

4. Inspect and Clean Fuel Injector

• Disconnect the fuel injector connector from cylinder 2.
• Remove the fuel injector using the appropriate socket size.
• Inspect the injector for clogs; clean with appropriate injector cleaner or replace if necessary.
• Reinstall the fuel injector and reconnect the wiring.

5. Perform Compression Test

• Insert the compression gauge into the spark plug hole for cylinder 2.
• Crank the engine several times to obtain a reading.
• Compare the reading with the manufacturer's specifications (usually around 180 psi).
• If the compression is low, further investigation into piston rings or valves may be required.