what does it mean if my Ford Explorer Sixth Generation (2020-present) has a check engine light with...

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety during the repair.

2. Inspect Oxygen Sensors

• Tools Required: OBD-II scanner, multimeter.
• Sub-steps:
  1. Locate the upstream and downstream oxygen sensors.
  2. Use the OBD-II scanner to check the voltage readings of both sensors.
  3. If the upstream sensor is not responding properly, replace it.

3. Test Catalytic Converter

• Tools Required: Infrared thermometer or scan tool.
• Sub-steps:
  1. Start the engine and let it reach operating temperature.
  2. Measure the temperature at the inlet and outlet sides of the catalytic converter.
  3. A significant difference (more than 100°F) indicates a failing catalytic converter that should be replaced.

4. Replace Catalytic Converter (if necessary)

• Tools Required: Socket set, torque wrench, exhaust gasket.
• Sub-steps:
  1. Raise the vehicle securely on jack stands.
  2. Remove the exhaust pipes and any heat shields securing the catalytic converter.
  3. Disconnect the catalytic converter from the exhaust system.
  4. Install the new catalytic converter and secure it with the proper torque specifications.
  5. Reconnect any heat shields and exhaust pipes.

5. Reconnect Battery

• Sub-steps:
  1. Reconnect the negative battery terminal.
  2. Clear the check engine codes using the OBD-II scanner.