how to fix the P0302 code on my Toyota RAV4 XA50 (2019-2024)

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the battery to prevent electrical shorts.
• Ensure the engine is cool before beginning work.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug gap tool.
• Remove the engine cover (if applicable) to access the spark plug.
• Disconnect the ignition coil connector and remove the coil.
• Remove the spark plug using a socket wrench.
• Inspect and clean the spark plug hole.
• Install a new spark plug, ensuring it is gapped correctly (typically 0.043 inches for Toyota).
• Torque the spark plug to the manufacturer’s specifications (usually 13 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Check and Replace Ignition Coil (if necessary)

• Tools Required: Socket set, multimeter.
• Test the ignition coil for cylinder 2 with a multimeter; check for primary and secondary resistance.
• If out of specification, remove the faulty ignition coil and install a new one.
• Reconnect the ignition coil connector.

4. Inspect and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, socket set.
• Disconnect the fuel injector connector and fuel line (be cautious of fuel spills).
• Remove the fuel injector from cylinder 2.
• Inspect the injector for clogs or leaks and clean or replace as necessary.
• Reinstall the fuel injector securely and reconnect the fuel line and connector.

5. Final Steps

• Reconnect the battery.
• Clear the codes using the OBD-II scanner.
• Start the engine and check for proper operation.