my Tesla Model 3 Highland (2024-present) has P0301 error code what can cause it

Solution

1. Preparation

• Gather tools and materials: OBD-II scanner, multimeter, socket set, torque wrench, replacement spark plug, ignition coil (if needed), and fuel injector cleaner.
• Ensure the vehicle is parked on a level surface and the engine is cool.

2. Replace Spark Plug

• Remove the engine cover (if applicable).
• Disconnect the ignition coil connector from the cylinder 1 ignition coil.
• Remove the ignition coil by unscrewing it from the cylinder head.
• Remove the old spark plug using a spark plug socket and ratchet.
• Inspect the spark plug for wear; replace if necessary.
• Install the new spark plug to the manufacturer's torque specification (typically around 13-15 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Inspect and Replace Ignition Coil (if necessary)

• If the ignition coil appears damaged, replace it with a new one.
• Ensure the coil is seated properly and secured with bolts to the specified torque (typically 10-12 lb-ft).

4. Clean or Replace Fuel Injector

• If the injector is suspected to be faulty, disconnect the fuel injector connector and remove it.
• Use a fuel injector cleaner or replace the injector if it is clogged or malfunctioning.
• Reinstall the injector ensuring it is seated correctly.

5. Clear Error Codes

• Use the OBD-II scanner to clear the P0301 code after repairs.
• Perform a test drive to confirm the issue is resolved.