how to fix P0301 misfire code in my Tesla Model S Original (2012-2020)

Learn how to diagnose and fix P0301 cylinder 1 misfire in Tesla Model S. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather required tools and parts.
• Ensure the vehicle is in a safe location and the ignition is off.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover (if applicable) using a socket set.
  2. Disconnect the ignition coil connector for cylinder 1.
  3. Remove the ignition coil using a socket wrench.
  4. Extract the spark plug using a spark plug socket.
  5. Inspect the spark plug for wear; replace it if necessary with a new spark plug that meets OEM specifications.
  6. Reinstall the spark plug and ignition coil, ensuring proper torque specifications (typically 12-15 lb-ft for spark plugs).
  7. Reconnect the ignition coil connector.

3. Inspect and Replace Ignition Coil

• Sub-steps:
  1. If the spark plug is fine, inspect the ignition coil for damage.
  2. If needed, remove the ignition coil from cylinder 1.
  3. Install the new ignition coil in the correct orientation.
  4. Reconnect the ignition coil connector.

4. Check and Clean Fuel Injector

• Sub-steps:
  1. Disconnect the fuel line from the fuel injector for cylinder 1 (ensure safety by relieving fuel pressure first).
  2. Remove the fuel injector using a removal tool.
  3. Inspect the fuel injector for clogging; clean or replace as necessary.
  4. Reinstall the fuel injector and reconnect the fuel line, ensuring there are no leaks.

5. Perform Compression Test (if necessary)

• Sub-steps:
  1. Remove the spark plug for cylinder 1.
  2. Insert the compression tester into the spark plug hole.
  3. Crank the engine for several revolutions and record the compression reading.
  4. Compare the reading to manufacturer specifications; if low, further inspection may be required.