my Toyota Camry XV70 (2018-2024) has a check engine light and P0302 code, what does it mean?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal to ensure safety.

2. Inspect and Replace Ignition Components

• Ignition Coil

  • Remove the engine cover if applicable.
  • Disconnect the electrical connector from the ignition coil on cylinder 2.
  • Remove the bolt securing the ignition coil and carefully pull it out.
  • Install a new ignition coil and secure it with the bolt. Reconnect the electrical connector.

• Spark Plug

  • Remove the ignition coil as described above.
  • Use a spark plug socket to remove the spark plug from cylinder 2.
  • Inspect the spark plug for wear; replace if necessary.
  • Gap the new spark plug according to manufacturer specifications.
  • Install the new spark plug and torque to manufacturer specifications (typically around 13-15 ft-lbs).
  • Reinstall the ignition coil.

3. Test Fuel Injector Function

• Disconnect the fuel injector connector from cylinder 2.
• Use a multimeter to check for the correct resistance of the fuel injector.
• If resistance is out of specification, replace the fuel injector.
• Reconnect the fuel injector harness.

4. Compression Test

• Remove the spark plug from cylinder 2.
• Insert a compression tester into the spark plug hole.
• Crank the engine for a few seconds and record the compression reading.
• Compare the reading to manufacturer specifications (typically around 180-200 psi).
• If the reading is low, further inspection of the engine’s internals may be necessary.

5. Check for Vacuum Leaks

• Inspect all vacuum hoses attached to the intake manifold.
• Use a smoke machine or spray carb cleaner around the intake manifold and vacuum hoses to check for leaks.
• Repair or replace any damaged hoses or gaskets found.