how to fix the P0302 code on my Toyota Camry Eighth Generation (2018-present)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal.
• Allow the engine to cool before beginning work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil from cylinder 2:
  1. Unscrew the bolts securing the ignition coil.
  2. Gently pull the ignition coil out.
• Remove the spark plug:
  1. Use a spark plug socket to unscrew the spark plug.
  2. Inspect for wear or fouling; replace if necessary.
• Install the new spark plug:
  1. Torque the new spark plug to manufacturer specifications (typically 13-16 lb-ft).
  2. Reinstall the ignition coil and secure it with bolts.

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set, torque wrench.
• If the ignition coil for cylinder 2 is faulty:
  1. Disconnect the electrical connector from the ignition coil.
  2. Remove the ignition coil from the cylinder head.
  3. Install a new ignition coil and ensure it is seated properly.
  4. Reconnect the electrical connector and secure it.

4. Test Fuel Injector

• Tools Required: Multimeter or fuel pressure gauge.
• Verify the fuel injector's operation:
  1. Disconnect the fuel injector connector.
  2. Use a multimeter to check resistance; compare against manufacturer specifications.
  3. If faulty, remove and replace the fuel injector.
  4. Reconnect the fuel injector connector.

5. Compression Test

• Tools Required: Compression tester.
• Conduct a compression test on cylinder 2:
  1. Remove the spark plug from cylinder 2.
  2. Insert the compression tester into the spark plug hole.
  3. Crank the engine and record the compression reading.
  4. Compare results to manufacturer specifications. If low, further investigation may be needed for internal issues.