how to fix P0301 misfire code in Toyota RAV4 Fourth Generation (2013-2018)

Solution

1. Preparation

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

2. Replace Spark Plug

1. Remove the engine cover if applicable.
2. Remove the ignition coil by unscrewing it and disconnecting the electrical connector.
3. Using a spark plug socket, carefully remove the spark plug from cylinder 1.
4. Inspect the old spark plug for wear; if it is damaged or worn, replace it with a new one. Torque the new spark plug to 13 lb-ft (18 Nm).

3. Replace Ignition Coil (if necessary)

1. If the ignition coil shows signs of failure during inspection, install a new ignition coil in cylinder 1.
2. Securely fasten the ignition coil and reconnect the electrical connector.

4. Check Fuel Injector

1. If the injector is suspected to be faulty, remove it by disconnecting the electrical connector and loosening any retaining clips.
2. Inspect the injector for clogs or damage.
3. If necessary, replace the fuel injector with a new unit.

5. Reassemble and Reconnect

1. Reinstall the ignition coil and any covers that were removed.
2. Reconnect the battery.
3. Ensure all connections are secure and the workspace is clean.