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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the engine is cool before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil for cylinder 2 by unbolting it and disconnecting the electrical connector.
• Remove the spark plug using a spark plug socket.
• Inspect the old spark plug for wear; replace with a new one if damaged or fouled.
• Torque the new spark plug to the manufacturer's specifications (typically around 13-15 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Check and Replace Ignition Coil

• If the spark plug replacement does not resolve the code, check the ignition coil.
• Tools Required: Multimeter, socket set.
• Test the ignition coil resistance using a multimeter according to specifications (typically around 0.5-0.8 ohms for primary resistance).
• If out of spec, replace the ignition coil with a new one and reinstall it as per the previous step.

4. Inspect Fuel Injector

• Remove the fuel rail if necessary to access the fuel injector for cylinder 2.
• Tools Required: Socket set, injector puller tool.
• Check for electrical connectivity at the injector connector using a multimeter.
• If the injector is faulty, replace it with a new one and ensure proper seating in the fuel rail.

5. Check for Vacuum Leaks

• Inspect hoses and gaskets around cylinder 2 for leaks.
• Use a smoke machine or carburetor cleaner to detect leaks.
• Replace any damaged hoses or gaskets found during inspection.