how to resolve the check engine light for P0302 in 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 and parts required for the repair.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench
• Remove the ignition coil from cylinder 2:
  • Disconnect the electrical connector from the ignition coil.
  • Unbolt the ignition coil using the socket set.
• Remove the spark plug:
  • Use the spark plug socket to unscrew the spark plug.
  • Inspect the old spark plug for damage or excessive wear.
• Install the new spark plug:
  • Apply anti-seize lubricant on the threads of the new spark plug.
  • Torque the spark plug to the manufacturer’s specified torque (typically around 20 ft-lbs).
• Reinstall the ignition coil:
  • Bolt the ignition coil back in place and reconnect the electrical connector.

3. Inspect and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, socket set
• Remove the fuel rail if needed to access the fuel injector for cylinder 2:
  • Relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
  • Disconnect fuel lines and unbolt the fuel rail.
• Remove the fuel injector from cylinder 2:
  • Carefully pull out the injector from its seat.
• Install the new fuel injector:
  • Lubricate the O-ring on the new injector and install it into the manifold.
  • Reinstall the fuel rail and reconnect fuel lines.

4. Final Checks

• Reconnect the negative battery terminal.
• Start the engine and allow it to idle for a few minutes to check for smooth operation.