what does it mean if my Toyota RAV4 shows code P0302?

Solution

1. Preparation

• Gather tools: OBD-II scanner, socket set, torque wrench, multimeter, compression tester, fuel pressure gauge.
• Disconnect the negative battery terminal to prevent any electrical shorts during repairs.

2. Inspect and Replace Spark Plug

• Remove the engine cover (if applicable).
• Use a socket set to remove the spark plug for cylinder 2.
• Inspect the spark plug for wear or damage; replace if necessary.
• Torque the new spark plug to the manufacturer’s specifications.

3. Test and Replace Ignition Coil

• Unplug the ignition coil connector for cylinder 2.
• Remove the ignition coil using a socket set.
• Test the ignition coil with a multimeter to ensure it is functioning correctly; replace if faulty.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Check and Clean Fuel Injector

• Remove the fuel injector for cylinder 2 according to manufacturer specifications.
• Inspect the injector for clogs or damage; clean if necessary or replace if defective.
• Reinstall the injector ensuring proper seating and connection.

5. Compression Test

• Attach the compression tester to the spark plug hole of cylinder 2.
• Crank the engine to obtain a compression reading; compare with manufacturer specifications.
• Address any issues found (e.g., valve problems, head gasket leaks) based on compression results.