how to fix P0302 code in Toyota Camry XV40 (2007-2011)

Solution

1. Preparation

• Gather necessary tools and parts.
• 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

• Remove the ignition coil for cylinder 2:
  • Use a socket set to remove the bolts securing the coil.
  • Carefully pull the coil straight out.
• Remove the spark plug:
  • Use a spark plug socket to loosen and remove the spark plug.
• Inspect the spark plug for wear or damage and replace if necessary:
  • Ensure the gap is set to the manufacturer’s specification (typically around 0.043 inches for Toyota).
• Reinstall the new spark plug and ignition coil.

3. Inspect and Replace Ignition Coil (If Necessary)

• If the spark plug is fine, test the ignition coil using a multimeter:
  • Measure the resistance between terminals; compare with manufacturer specifications.
• If faulty, replace the ignition coil with a new one:
  • Install the new coil and secure it with bolts.

4. Fuel Injector Check

• Remove the fuel injector connector for cylinder 2 and test the injector:
  • Use a multimeter to check for proper voltage and resistance.
• If faulty, replace the fuel injector:
  • Disconnect the fuel rail and replace the injector, ensuring O-rings are lubricated before installation.

5. Compression Test

• Perform a compression test on cylinder 2:
  • Remove the spark plug and install the compression gauge.
  • Crank the engine and record the reading; it should be within manufacturer specifications.
• If compression is low, investigate further for potential internal engine issues.