how to fix P0302 code on Toyota Camry Seventh Generation (2012-2017)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2.
  • Tools: Socket set, ratchet.
  • Safety: Wear gloves and safety glasses.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear, carbon build-up, or damage.
• If worn or damaged, replace with a new spark plug (gap to manufacturer specifications).

3. Inspect and Replace Ignition Coil

• If the spark plug is fine, check the ignition coil.
• Swap the ignition coil with another cylinder to see if the misfire moves.
• If the misfire follows the coil, replace the ignition coil with a new one.

4. Check Fuel Injector

• If the ignition components are fine, check the fuel injector for cylinder 2.
• Disconnect the fuel injector connector and perform a resistance test with a multimeter.
  • Specifications: Usually around 12-16 ohms for standard injectors.
• If out of spec, replace the fuel injector.

5. Check for Vacuum Leaks

• Inspect vacuum hoses and intake manifold gaskets for leaks.
• Use a smoke machine or carburetor cleaner to identify leaks.
• If leaks are found, replace the damaged hoses or gaskets.