what does it mean if my Tesla Model 3 Highland (2024-present) shows a P0301 code?

Solution

1. Preparation

• Gather tools and materials required for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the engine is cool before starting work.

2. Inspect and Replace Spark Plug

1. Remove the engine cover if applicable.
2. Locate the spark plug for cylinder 1.
3. Use a spark plug socket and ratchet to remove the spark plug.
4. Inspect the spark plug for wear or damage; replace if necessary.
5. Gap the new spark plug to the manufacturer’s specifications.
6. Install the new spark plug and torque it to the manufacturer’s specifications (typically around 13 lb-ft).

3. Inspect and Replace Ignition Coil

1. Disconnect the ignition coil connector.
2. Remove the ignition coil retaining bolt using a socket.
3. Carefully pull the ignition coil out of the cylinder head.
4. Inspect for signs of damage or wear; replace if needed.
5. Install the new ignition coil and secure it with the retaining bolt, torquing to specifications.

4. Fuel Injector Inspection

1. Disconnect the fuel injector electrical connector.
2. Remove the fuel injector retaining clips and pull out the injector.
3. Inspect for clogs or damage; clean or replace as necessary.
4. Reinstall the fuel injector, securing with clips.

5. Compression Test

1. Remove the spark plug from cylinder 1.
2. Insert a compression gauge into the spark plug hole.
3. Crank the engine to take a reading and compare to manufacturer specifications (typically between 180-200 psi).
4. If low, investigate further for issues like valve problems or head gasket failure.