why does my Ford Explorer's engine light keep coming on

Solution

1. Preparation

• Gather required tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to ensure safety during electrical checks.

2. Address Fault Codes

• Sub-step 1: Use the OBD-II scanner to retrieve any stored fault codes.
• Sub-step 2: Research the codes to determine the potential issues (e.g., P0420 for catalytic converter efficiency).
• Sub-step 3: Clear the codes and monitor if they return after a test drive.

3. Inspect and Replace Components

• Sub-step 1: Inspect the gas cap seal; replace if damaged or not sealing properly (part may need to be purchased).
• Sub-step 2: Remove and inspect spark plugs; replace if fouled or worn (use appropriate spark plug type for the model).
• Sub-step 3: Check ignition coils; replace any that show signs of failure (test with a multimeter if necessary).

4. Clean or Replace Air Intake Components

• Sub-step 1: Remove the air filter and inspect for dirt or damage; replace if necessary.
• Sub-step 2: Inspect the air intake hose for cracks; replace if needed.
• Sub-step 3: Clean the Mass Air Flow (MAF) sensor using MAF cleaner if applicable.

5. Check and Repair Exhaust Components

• Sub-step 1: Inspect the exhaust system for leaks or damage (focus on the catalytic converter).
• Sub-step 2: Replace any damaged exhaust components that may contribute to emissions issues.