my Toyota Camry Eighth Generation (2018-present) has a check engine light and P0301 code, what shoul...

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shocks.
• Allow the engine to cool down before starting work.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the ignition coil connector from cylinder 1.
  3. Remove the ignition coil using a socket set.
  4. Unscrew and remove the spark plug using a spark plug socket.
  5. Inspect the spark plug for wear or damage; replace if necessary.
  6. Install a new spark plug, tightening it to the manufacturer's specification (usually around 13-16 lb-ft).
  7. Reinstall the ignition coil and reconnect the electrical connector.

3. Test and Replace Ignition Coil (if necessary)

• Sub-steps:
  1. Connect a multimeter to the ignition coil to check for proper resistance (consult specifications for your model).
  2. If the coil is faulty, remove it and replace it with a new one.
  3. Reconnect the ignition coil and ensure all connections are secure.

4. Inspect Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 1.
  2. Use a fuel pressure gauge to check the fuel pressure at the rail.
  3. If pressure is low, inspect the fuel pump and filter; replace if necessary.
  4. If the injector is suspected to be clogged, remove it and clean it with an injector cleaner or replace it.

5. Check for Vacuum Leaks

• Sub-steps:
  1. Visually inspect all vacuum lines connected to the intake manifold.
  2. Use a smoke machine or carburetor cleaner to identify leaks around the intake manifold.
  3. Replace any damaged vacuum hoses or reseal the intake manifold as needed.