my Tesla Model 3 Highland (2024-present) has a P0301 code, what does that mean?

Solution

1. Preparation

• Gather tools and materials needed for the repair.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to avoid electrical shock.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench.
• Remove the engine cover if necessary.
• Use the spark plug socket to remove the spark plug from cylinder 1.
• Inspect the spark plug for wear, carbon buildup, or damage.
• If necessary, replace with a new spark plug that meets manufacturer specifications.
• Torque the new spark plug to the manufacturer's specified value (usually around 13-20 lb-ft).

3. Check and Replace Ignition Coil

• Tools Required: Socket set, multimeter.
• Disconnect the electrical connector from the ignition coil on cylinder 1.
• Remove the ignition coil using the socket set.
• Test the ignition coil with a multimeter for proper resistance; replace if faulty.
• Install the new ignition coil and reconnect the electrical connector.

4. Test Fuel Injector

• Tools Required: Fuel injector cleaning kit or multimeter.
• Disconnect the fuel injector connector on cylinder 1.
• Use a fuel injector cleaning kit to clean the injector or test it for proper operation.
• Replace the injector if it is found to be clogged or malfunctioning.

5. Compression Test

• 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; it should be within the specified range for the engine.
• If compression is low, further investigation is needed for internal engine issues.