how to fix P0302 code on my Volvo XC60 536 (2017-Present)?

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

• Gather tools: OBD-II scanner, torque wrench, socket set, compression tester, multimeter, fuel injector tester.
• Disconnect the battery negative terminal to ensure safety while working on the electrical components.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2 by unscrewing the bolts and gently pulling it out.
• Remove the spark plug using a spark plug socket and inspect for wear or damage.
  • If damaged, replace the spark plug with a new one, ensuring it meets OEM specifications.
• Torque the new spark plug to the manufacturer’s specification (typically around 20 lb-ft).

3. Inspect and Replace Ignition Coil

• If the spark plug is fine, test the ignition coil using a multimeter for resistance.
• If the ignition coil fails the test, replace it with a new coil designed for the Volvo XC60.
• Reinstall the ignition coil and make sure it is securely connected.

4. Check and Replace Fuel Injector

• If the ignition components are functioning properly, test the fuel injector for cylinder 2 using a fuel injector tester.
• If the injector is faulty, remove it from the engine and replace it with a new one.
• Reinstall the fuel injector, ensuring it is properly seated and secured.

5. Perform Compression Test

• If misfires persist, perform a compression test on cylinder 2.
• If compression is low, additional inspection may be required for internal engine issues (valves, piston rings, etc.).