what does the P0301 code indicate for my Tesla Model 3 Highland (2024-present)?

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Remove the engine cover if applicable.
• Use a socket wrench to remove the spark plug from cylinder 1.
• Inspect the spark plug for signs of wear, such as carbon buildup or damage.
• Replace the spark plug with the manufacturer-specified part.
• Torque the new spark plug to the manufacturer's specifications (usually around 15 lb-ft).

3. Inspect and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil from cylinder 1 using a socket wrench.
• Inspect the coil for any cracks or damage.
• Install the new ignition coil and reconnect the electrical connector.
• Ensure the coil is seated properly and secure.

4. Check Fuel Injector

• Disconnect the fuel injector connector for cylinder 1.
• Use a multimeter to test the injector's resistance; replace if outside specifications.
• If functioning, clean the injector using an appropriate cleaner or replace it if necessary.

5. Reassemble and Test

• Reinstall the engine cover if removed.
• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature.