how to fix P0302 code in Volkswagen Golf Seventh Generation (2013-2020)

Solution

1. Preparation

• Gather required tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down before beginning work.

2. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, ratchet
• Remove the engine cover if applicable.
• Disconnect the ignition coil connector for cylinder 2.
• Remove the ignition coil using a socket and ratchet.
• Inspect the spark plug; replace it if worn or fouled.
• Install a new spark plug to the manufacturer's specifications (typically 20 Nm torque).
• Reinstall the ignition coil and connect the wiring harness.

3. Test and Replace Fuel Injector (if necessary)

• Tools Required: Noid light or multimeter, fuel injector removal tool
• Disconnect the fuel injector connector for cylinder 2.
• Use a noid light or multimeter to test for signal; if no signal is detected, trace back to the wiring or ECM.
• If the injector is faulty, remove it using the fuel injector removal tool.
• Install a new fuel injector, ensuring it is seated properly, and reconnect the wiring harness.

4. Conduct Compression Test

• Tools Required: Compression tester
• Remove the spark plug for cylinder 2.
• Insert the compression tester and crank the engine to get a reading.
• Compare the compression readings with the manufacturer’s specifications; if low, further diagnosis of potential internal engine issues may be needed.

5. Reassemble and Clear Codes

• Reinstall any components removed during the process.
• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature.
• Use the OBD-II scanner to clear the P0302 code and monitor for reoccurrence.