how do I clear the P0301 code in my Toyota RAV4 XA50 (2019-2024)

Solution

1. Preparation

• Gather tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal for safety.

2. Inspect and Replace Spark Plug

• Remove the ignition coil cover if necessary.
• Use a socket wrench to remove the spark plug from cylinder 1.
• Inspect the spark plug for fouling or wear; replace if necessary (recommended gap: 0.043 inches).
• Reinstall the new spark plug and torque to manufacturer specifications (typically around 13-15 ft-lbs).

3. Check and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil from cylinder 1.
• Test the ignition coil with a multimeter; if it fails, replace it with a new one.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Compression Test

• Remove the spark plug and insert a compression tester into cylinder 1.
• Crank the engine to measure compression; it should meet manufacturer specifications (usually around 180 psi).
• If compression is low, further engine diagnostics may be necessary.

5. Check Fuel Injector

• Remove the fuel rail if necessary to access the fuel injector for cylinder 1.
• Test the fuel injector for proper operation using a multimeter or by applying voltage to check for clicking sound.
• Replace the injector if it is faulty.

6. Clear the Error Code

• Reconnect the battery terminal.
• Use the OBD-II scanner to clear the P0301 code.
• Start the engine to verify that the check engine light does not reappear.