what does it mean when my Toyota Camry has a misfire code P0302

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the battery to prevent electrical issues while working.
• Ensure the vehicle is on a level surface and secure with wheel chocks.

2. Replace Spark Plug and Ignition Coil

• Tools Required: Socket set, torque wrench.
• Remove the engine cover if applicable.
• Disconnect the ignition coil connector for cylinder 2.
• Unscrew the ignition coil using the socket set and remove it.
• Remove the spark plug using a spark plug socket and ratchet.
• Inspect the old spark plug for wear; if necessary, replace it with a new one.
• Install the new spark plug and torque to the manufacturer’s specification (typically around 13-15 lb-ft).
• Reinstall the ignition coil and reconnect the connector.

3. Inspect and Replace Fuel Injector (if needed)

• Tools Required: Fuel injector puller (if necessary), safety glasses.
• Relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
• Disconnect the fuel injector connector for cylinder 2.
• Remove any retaining clips and unscrew the fuel injector from the rail.
• Inspect the injector for blockages; replace if faulty.
• Install the new injector, ensuring O-rings are lubricated with engine oil.
• Reconnect the fuel line and electrical connector.

4. Final Assembly and Testing

• Reinstall any engine covers removed during the process.
• Reconnect the battery.
• Start the engine and allow it to idle to check for smooth operation and to ensure no further codes are present.