how do I fix P0302 code in Toyota Camry Eighth Generation (2018-present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench
• Remove the ignition coil from cylinder 2:
  1. Unplug the electrical connector from the ignition coil.
  2. Remove the screws or bolts securing the coil and lift it out.
• Remove the spark plug:
  1. Use a spark plug socket to remove the spark plug from cylinder 2.
  2. Inspect the spark plug for damage or excessive wear.
• Replace with a new spark plug if necessary, ensuring it is gapped correctly to manufacturer specifications.
• Reinstall the ignition coil.

3. Check and Replace Ignition Coil

• Tools Required: Socket set
• If the spark plug is fine, check the ignition coil:
  1. Test the ignition coil's resistance using a multimeter (consult specifications for values).
  2. If the coil is faulty, replace it with a new one.
• Reinstall the ignition coil after replacement.

4. Inspect and Test Fuel Injector

• Tools Required: Fuel injector tester (if available)
• Check the fuel injector for cylinder 2:
  1. Remove the fuel injector connector.
  2. Test the fuel injector's resistance and operation with a fuel injector tester.
  3. Replace the injector if it’s not functioning correctly.
• Reconnect the fuel injector and connector.

5. Address Vacuum Leaks

• Inspect hoses connected to the intake manifold for cracks or disconnections.
• Repair or replace any damaged hoses to ensure proper vacuum pressure.

6. Compression Test (if necessary)

• Tools Required: Compression tester
• If previous steps do not resolve the issue:
  1. Perform a compression test on cylinder 2.
  2. If compression is low, further investigation into the engine’s internal components (valves, piston rings) will be necessary.