how to fix P0301 code in my Tesla Model 3 Highland (2024-present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.
• Allow the engine to cool down before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket
• Remove the ignition coil cover if applicable.
• Unplug the electrical connector from the ignition coil.
• Remove the ignition coil using a socket.
• Unscrew the spark plug using a spark plug socket.
• Inspect the spark plug for wear; replace if necessary.
• Install a new spark plug, tightening to the manufacturer’s specifications (typically around 13-15 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Check and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector puller, basic hand tools
• Disconnect the fuel line (ensure to release fuel pressure first).
• Remove the fuel rail if necessary to access the injector.
• Pull the old fuel injector out and inspect O-rings for damage.
• Install the new fuel injector, ensuring it is seated properly.
• Reconnect the fuel rail and fuel line.

4. Perform Compression Test (if necessary)

• Tools Required: Compression tester
• Remove spark plug from cylinder 1.
• Insert the compression tester into the spark plug hole.
• Crank the engine and record the compression reading.
• Compare it to the manufacturer’s specifications; replace engine components if readings are low.