how to clear a P0302 code in my Volvo XC60 Second Generation (2018-2024)

Learn how to diagnose and fix P0302 cylinder 2 misfire in Volvo XC60. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, compression tester, fuel injector cleaner.
• Safety Warnings: Disconnect the battery before working on electrical components. Allow the engine to cool before proceeding.

2. Inspect and Replace Spark Plug

• Remove the engine cover if necessary.
• Disconnect the ignition coil connector on cylinder 2.
• Remove the ignition coil using a socket set.
• Remove the spark plug from cylinder 2 using a spark plug socket.
• Inspect the spark plug for wear or damage; replace if necessary.
  • Torque Specifications: Install the new spark plug with a torque of 13 lb-ft.
• Reinstall the ignition coil and reconnect the connector.

3. Test and Replace Ignition Coil (if needed)

• If the spark plug is fine, test the ignition coil using a multimeter:
  • Check the primary and secondary resistance according to the manufacturer’s specifications.
• If the coil is faulty, replace it with a new one.
• Reinstall and reconnect the ignition coil.

4. Inspect and Test Fuel Injector

• Disconnect the fuel injector connector for cylinder 2.
• Test the injector for proper resistance using a multimeter.
• If the injector is faulty, remove it using the socket set and replace it with a new one.
• Reconnect the fuel injector connector.

5. Perform Compression Test

• Insert the compression tester into the spark plug hole of cylinder 2.
• Crank the engine and note the reading. Compare it to the manufacturer’s specifications.
• If compression is low, further investigation is needed for possible mechanical issues.

6. Clear Codes

• Reconnect the battery.
• Use the OBD-II scanner to clear the P0302 code from the vehicle’s computer.