why does my Toyota RAV4 Fifth Generation (2019-present) check engine light keep flashing

Solution

1. Preparation

• Gather tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.

2. Scan for Codes

• Use an OBD-II scanner to retrieve trouble codes.
• Document any codes related to misfires (e.g., P0300-P0304).

3. Inspect Ignition System

• Tools Required: Socket set, torque wrench.
• Remove engine cover if applicable.
• Check each spark plug for wear or damage; replace if necessary.
• Test ignition coils with a multimeter; replace any faulty coils.

4. Check Fuel System

• Tools Required: Fuel pressure gauge.
• Connect the fuel pressure gauge to the fuel rail.
• Start the engine and observe pressure; it should meet manufacturer specifications.
• If low, check fuel pump operation and replace fuel filter if clogged.

5. Inspect for Vacuum Leaks

• Visually inspect all vacuum hoses for cracks or disconnections.
• Use a smoke machine or propane to locate leaks, sealing any found.

6. Review Exhaust System

• Inspect the exhaust for blockages or damage.
• Check the catalytic converter for signs of failure or overheating.

7. Clear Codes and Test Drive

• Clear any stored trouble codes with the OBD-II scanner.
• Conduct a test drive to see if the check engine light reappears.