how to fix the P0301 code in my Toyota RAV4 Fourth Generation (2013-2018)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shocks.
• Allow the engine to cool if it has been running.

2. Replace Spark Plug

• Remove the ignition coil from Cylinder 1:
  • Unscrew the mounting bolt with a socket wrench.
  • Gently pull the coil straight out.
• Remove the spark plug:
  • Use a spark plug socket and ratchet to unscrew the old spark plug.
  • Inspect the old spark plug for signs of wear (e.g., carbon buildup, damage).
• Install the new spark plug:
  • Apply anti-seize compound to the threads (if recommended).
  • Torque the new spark plug to the manufacturer’s specifications (typically around 13-16 lb-ft).

3. Replace Ignition Coil (if necessary)

• If the ignition coil shows signs of damage, replace it:
  • Install the new ignition coil by aligning it against the spark plug and pressing it down until it clicks into place.
  • Reinstall the mounting bolt and torque it to specifications (usually around 7-10 lb-ft).

4. Check Fuel Injector (if necessary)

• Remove the fuel rail to access the injector:
  • Disconnect the fuel pump relay and crank the engine to relieve fuel pressure.
  • Unscrew the fuel rail mounting bolts and gently lift the rail.
• Inspect the fuel injector for any blockages or damage:
  • Clean it with an appropriate cleaner or replace it if defective.
• Reinstall the fuel rail and reconnect all electrical connections.