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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Spark Plug (if damaged)

• Remove the ignition coil from Cylinder 2 by unscrewing the bolts and disconnecting the electrical connector.
• Remove the spark plug using a spark plug socket and ratchet.
• Inspect the spark plug for wear; replace it if necessary with a new one that meets OEM specifications (typically NGK or Denso).
• Torque the new spark plug to the manufacturer’s specification (usually around 13-15 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Check/Replace Ignition Coil (if faulty)

• If the spark plug is in good condition, test the ignition coil using a multimeter to ensure it is within specifications (usually around 0.5-0.6 ohms for primary resistance).
• If faulty, replace the ignition coil with a new one, ensuring it matches OEM specifications.
• Reinstall and secure it properly.

4. Inspect/Replace Fuel Injector (if necessary)

• If the ignition coil and spark plug are good, check the fuel injector’s operation using a noid light or multimeter.
• If the injector is faulty, remove the fuel rail by disconnecting fuel lines and unscrewing the mounting bolts.
• Replace the faulty fuel injector with a new one, ensuring to lubricate O-rings with clean engine oil before installation.
• Reinstall the fuel rail and reconnect fuel lines, ensuring no leaks.

5. Reassemble and Test

• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature.
• Monitor engine performance for any signs of misfire.