how to fix P0301 misfire code in Toyota Camry Eighth Generation (2018-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to avoid electrical issues.
• Allow the engine to cool before starting the repair.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Use a 10mm socket to remove the bolts securing the coil pack.
• Disconnect the ignition coil connector.
• Remove the ignition coil from cylinder 1.
• Unscrew the spark plug using a spark plug socket and ratchet.
• Inspect the old spark plug; if it shows excessive wear, replace it with a new one.
• Install the new spark plug and torque to the manufacturer’s specification (usually around 13 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Inspect and Replace Ignition Coil (if necessary)

• If the ignition coil appears damaged or if swapping it did not resolve the misfire, replace the ignition coil for cylinder 1.
• Follow the same steps as above for removal and installation.
• Ensure proper torque specifications (usually around 7 lb-ft) when securing the coil.

4. Clean or Replace Fuel Injector (if necessary)

• If the fuel injector is suspected to be clogged, use a fuel injector cleaning kit to clean it.
• If cleaning does not resolve the issue, replace the fuel injector.
• Disconnect fuel lines carefully, using proper safety measures to avoid fuel spills.
• Install the new injector and reconnect the fuel line.