my Toyota RAV4 Fifth Generation (2019-present) has a check engine light and low power

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety during repairs.

2. Scan and Analyze Error Codes

• Use an OBD-II scanner to retrieve diagnostic trouble codes (DTCs).
• Record all codes and refer to service manual for descriptions and possible causes.

3. Inspect and Clean Air Intake System

• Remove the air intake duct using a socket set.
• Inspect for any obstructions or leaks in the duct.
• Clean the air filter or replace it if necessary.

4. Test and Replace Fuel System Components

• Connect the fuel pressure gauge to the fuel rail.
• Start the engine and observe the pressure reading; compare with manufacturer specifications.
• If pressure is low, check the fuel pump and fuel filter; replace if faulty.

5. Clean or Replace Throttle Body

• Disconnect the throttle body connector and remove the throttle body using a socket set.
• Clean the throttle body with throttle body cleaner and a soft brush.
• If damage is found, replace the throttle body.

6. Check Spark Plugs and Ignition Coils

• Remove the engine cover if necessary, and access the spark plugs.
• Inspect spark plugs for wear; replace if necessary (gapping as per specifications).
• Check ignition coils for cracks or corrosion; replace if needed.

7. Inspect Mass Airflow Sensor

• Disconnect the MAF sensor connector and remove it from the intake.
• Clean the MAF sensor with MAF cleaner.
• Reinstall and ensure the connector is secure.