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

Solution

1. Preparation

• Gather tools and parts needed for repairs.
• Disconnect the vehicle battery to prevent electrical shorts and ensure safety.

2. Addressing Error Codes

• Use the OBD-II scanner to retrieve and note down the trouble codes.
• Research the meaning of each code to determine the specific issue.

3. Inspecting and Replacing Components

A. Fuel Cap Replacement

• Remove the old fuel cap by turning it counterclockwise.
• Install a new fuel cap by turning it clockwise until you hear a click.

B. Spark Plug and Ignition Coil Replacement

1. Remove the engine cover (if applicable) using a socket set.
2. Disconnect the ignition coil connector.
3. Unscrew the ignition coil from the engine using the socket set.
4. Replace the spark plug using a spark plug socket and torque to manufacturer specifications (typically around 13-15 lb-ft).
5. Reinstall the ignition coil, ensuring it clicks into place, and reconnect the connector.

4. Cleaning or Replacing MAF Sensor

1. Disconnect the MAF sensor connector.
2. Remove the MAF sensor from the air intake duct.
3. If cleaning, use MAF cleaner spray and let it dry completely; if replacing, install a new MAF sensor.
4. Reconnect the MAF sensor and ensure it is secure.

5. Exhaust Leak Repair

• Inspect the exhaust system visually for holes or rust. Use a flashlight if necessary.
• If leaks are found, use exhaust sealant or replace damaged sections of the exhaust as needed.