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

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

• Tools Required: Socket set, torque wrench, spark plug socket, dielectric grease.
• Remove the ignition coil cover (if applicable).
• Disconnect the wiring harness from the ignition coil.
• Remove the ignition coil from cylinder 2.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for damage or excessive wear.
  • If damaged, replace it with a new spark plug, ensuring the correct gap as specified by the manufacturer.
• Apply dielectric grease to the ignition coil boot before reinstallation.

3. Check and Replace Ignition Coil

• If the spark plug is in good condition, check the ignition coil using a multimeter.
  • Measure the primary and secondary resistance as per specifications.
• If the coil is faulty, replace it with a new ignition coil for cylinder 2.
• Reinstall the ignition coil and reconnect the wiring harness.

4. Inspect and Clean Fuel Injector

• Tools Required: Fuel injector cleaner, cleaning kit (if applicable).
• If injector issues are suspected, remove the fuel injector from cylinder 2.
• Clean the injector using an appropriate fuel injector cleaning kit.
• If cleaning does not resolve the issue, replace the fuel injector with a new one.

5. Reassemble and Reconnect Battery

• Reinstall any removed components in reverse order.
• Reconnect the negative battery terminal.
• Clear the codes using an OBD-II scanner.