what does it mean if my Toyota Corolla E210 (2019-2024) check engine light is flashing?

Solution

1. Preparation

• Gather necessary tools (OBD-II scanner, socket set, multimeter, etc.).
• Ensure the vehicle is in a safe location and the engine is off.
• Disconnect the battery to avoid any electrical shorts during repairs.

2. Address Ignition System

• Sub-step 1: Remove the ignition coils and inspect for cracks or damage.
• Sub-step 2: Replace faulty ignition coils if any are found defective.
• Sub-step 3: Remove spark plugs using a socket wrench; inspect for wear or carbon buildup.
• Sub-step 4: Replace spark plugs with OEM parts and torque to manufacturer specifications (typically around 13 lb-ft).

3. Fuel System Inspection

• Sub-step 1: Check fuel injector operation using a multimeter to measure resistance; replace any faulty injectors.
• Sub-step 2: Test fuel pressure with a fuel pressure gauge; ensure it meets manufacturer specifications (usually around 43-50 psi for Corolla).
• Sub-step 3: Replace the fuel filter if it shows signs of clogging or if it has not been replaced in accordance with maintenance schedule.

4. Check for Vacuum Leaks

• Sub-step 1: Inspect all vacuum hoses for cracks or disconnections; replace any damaged hoses.
• Sub-step 2: Use a smoke machine or propane to detect vacuum leaks around the intake manifold and throttle body.

5. Exhaust System Examination

• Sub-step 1: Inspect the exhaust system for any blockages or damage.
• Sub-step 2: Ensure the catalytic converter is functioning properly, replacing it if necessary.