why does my Toyota Camry Eighth Generation (2018-present) check engine light keep coming on

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical systems.
• Allow the engine to cool before proceeding.

2. Address Error Codes

• Sub-step 1: Use the OBD-II scanner to retrieve the error codes.
• Sub-step 2: Reference the codes against a repair manual to determine potential issues.
• Sub-step 3: Clear the codes and see if the check engine light reappears after a test drive.

3. Inspect and Replace Components

• Sub-step 1: If codes indicate faulty ignition components, remove the ignition coils using a socket set.
• Sub-step 2: Replace worn spark plugs and ignition coils as necessary, ensuring they are torqued to manufacturer specifications (usually around 13-16 lb-ft for spark plugs).
• Sub-step 3: If the fuel system is suspected, check fuel injectors and replace any that show signs of clogging or damage.

4. Check and Replace Gas Cap

• Sub-step 1: Inspect the gas cap for cracks or damage.
• Sub-step 2: Replace the gas cap if necessary, ensuring it clicks securely into place.

5. Final Inspection and Assembly

• Sub-step 1: Reconnect the battery.
• Sub-step 2: Start the engine and monitor for new codes or symptoms.
• Sub-step 3: Ensure all components are reassembled properly and there are no leaks.