how to fix the P0301 code in my Toyota Camry XV70 (2018-2024)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on the electrical components.

2. Replace Spark Plug

1. Remove the engine cover (if applicable) using a socket set.
2. Use a spark plug socket to remove the spark plug from cylinder 1.
3. Inspect the old spark plug for signs of wear; replace it with a new spark plug if necessary.
4. Ensure the new spark plug gap is set according to the manufacturer specifications (typically between 0.043 inches).
5. Install the new spark plug and torque it to the specified value (usually around 13-15 ft-lbs).

3. Replace Ignition Coil

1. Disconnect the electrical connector from the ignition coil for cylinder 1.
2. Remove the ignition coil mounting bolts using a socket set.
3. Carefully remove the ignition coil from the spark plug well.
4. Install the new ignition coil and secure it with the mounting bolts, torquing to the specified value (usually around 6-8 ft-lbs).
5. Reconnect the electrical connector.

4. Inspect/Replace Fuel Injector

1. Remove the intake manifold (if necessary) to access the fuel injector for cylinder 1.
2. Disconnect the fuel line and electrical connector from the injector.
3. Remove the retaining clips or screws for the fuel injector and pull it out.
4. Inspect the fuel injector for clogs or damage; replace if necessary.
5. Install the new fuel injector, ensuring it is seated properly, and reconnect the fuel line and electrical connector.

5. Reassemble and Test

1. Reinstall any components removed during the process, including the intake manifold and engine covers.
2. Reconnect the battery.
3. Start the engine and let it idle, checking for any abnormal noises or issues.