how to fix P0302 misfire code in Toyota Camry XV50 (2012-2017)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a flat surface and engaged in park or neutral.
• Disconnect the negative battery terminal to avoid electrical shocks or shorts.

2. Replace Spark Plug

• Remove the ignition coil from cylinder 2:
  • Unplug the ignition coil connector.
  • Remove the bolt securing the coil using a socket set.
  • Gently pull the coil out of the spark plug well.
• Remove the spark plug:
  • Use a spark plug socket to carefully unscrew and remove the spark plug.
  • Inspect the old spark plug for wear, carbon buildup, or damage.
• Install new spark plug:
  • Ensure the new spark plug is gapped correctly according to manufacturer specifications.
  • Hand-tighten the spark plug, then torque it to the recommended specification (typically around 13-16 lb-ft).

3. Replace Ignition Coil (if necessary)

• If the ignition coil is damaged, replace it:
  • Install the new ignition coil into the spark plug well, ensuring it is seated properly.
  • Reinstall the securing bolt and tighten to the specified torque (usually around 80-100 in-lb).
  • Reconnect the ignition coil connector.

4. Check Fuel Injector

• If further issues persist, inspect or replace the fuel injector for cylinder 2:
  • Remove the intake manifold if necessary to access the fuel rail.
  • Disconnect the fuel injector connector.
  • Remove the retaining clips and pull the fuel injector out of the rail.
  • Install the new fuel injector, ensuring it is seated correctly, and reconnect the electrical connector.

5. Reassemble and Reconnect Battery

• Reinstall any components that were removed during the process.
• Reconnect the negative battery terminal.
• Start the engine and allow it to reach normal operating temperature.