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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to avoid electrical shorts.
• Allow the engine to cool down before starting work.

2. Replace Spark Plug

1. Remove the engine cover if applicable.
2. Disconnect the ignition coil connector from cylinder 2.
3. Remove the ignition coil by unscrewing any retaining bolts and pulling it straight out.
4. Use a spark plug socket to remove the spark plug from cylinder 2. Inspect it for signs of wear or fouling.
5. Install a new spark plug, ensuring the gap is set to manufacturer specifications (typically around 0.043 inches).
6. Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil (if faulty)

1. If the ignition coil for cylinder 2 tested faulty, remove it as described above.
2. Install a new ignition coil, ensuring it is seated properly and secured with the retaining bolts.
3. Reconnect the ignition coil connector.

4. Clean or Replace Fuel Injector (if necessary)

1. If the fuel injector is clogged or not functioning, remove it by disconnecting the fuel line and electrical connector.
2. Clean the injector with a fuel injector cleaner or replace it with a new one.
3. Reinstall the injector and reconnect all lines and connectors.

5. Reassemble and Test

1. Reinstall any components removed during the repair, including the engine cover.
2. Reconnect the negative battery terminal.
3. Start the engine and allow it to idle. Monitor for any warning lights or irregular engine behavior.