my Ford Explorer's check engine light keeps coming on what does it mean

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface, and the engine is cool.

2. Diagnose and Address Error Codes

• Use an OBD-II scanner to retrieve and document the error codes.
• Research specific codes to understand potential causes.
• If a specific component is indicated (e.g., catalytic converter, oxygen sensor), proceed to address that issue.

3. Repair or Replace Faulty Components

• For a faulty oxygen sensor:

  • Disconnect the battery.
  • Locate the oxygen sensor, usually in the exhaust system.
  • Remove the sensor using an oxygen sensor socket.
  • Install the new sensor and reconnect the battery.

• For a damaged catalytic converter:

  • Raise the vehicle securely using jack stands.
  • Remove exhaust pipes connected to the catalytic converter.
  • Unbolt the catalytic converter from its mounting points.
  • Install the new catalytic converter, ensuring proper alignment and sealing.

4. Reset the Check Engine Light

• Use the OBD-II scanner to clear the error codes and reset the check engine light.
• Alternatively, disconnect the battery for about 15 minutes to reset.