my Toyota Camry XV70 (2018-2024) has a check engine light and shows P0302, what does it mean

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.
• Allow the engine to cool before proceeding to avoid burns.

2. Replace Spark Plug and Ignition Coil

• Tools Required: Socket set, torque wrench, spark plug socket, ratchet, dielectric grease.
• Remove the engine cover if equipped.
• Locate the ignition coil for cylinder 2 and disconnect the electrical connector.
• Remove the bolt securing the ignition coil and lift it out.
• Remove the spark plug using the spark plug socket. Inspect for wear or damage.
• Install a new spark plug with a gap set to manufacturer specifications (typically 0.043 inches for Toyota).
• Apply dielectric grease to the inside of the ignition coil boot.
• Reinstall the ignition coil and secure it with the bolt. Reconnect the electrical connector.

3. Inspect and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, fuel line disconnect tool, socket set.
• Relieve fuel system pressure by removing the fuel pump relay and running the engine until it stalls.
• Disconnect fuel lines using a fuel line disconnect tool and remove any retaining clips.
• Remove the fuel injector rail bolts and gently lift the rail to access the injectors.
• Remove the fuel injector from cylinder 2 and inspect for clogs or leaks. Replace if necessary.
• Reinstall the fuel injector, ensuring it seats properly in the rail, and reattach the fuel rail.

4. Check Engine Compression

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 2.
• Insert the compression tester into the spark plug hole.
• Turn the engine over a few times to get a reading. Compare the reading to manufacturer specifications.
• If compression is low, further investigation into engine condition may be necessary.