why does my Porsche 911 992 (2019-Present) check engine light stay on when the engine is running

Solution

1. Preparation

• Tools Required: OBD-II scanner, basic socket set, multimeter, torque wrench.
• Ensure the vehicle is parked on a level surface and the engine is cool.

2. Address Fault Codes

• Connect the OBD-II scanner and retrieve any stored error codes.
• Document the codes and research their meanings to determine the source of the problem.

3. Inspect and Replace Faulty Components

• Based on the error codes, identify the affected components (e.g., oxygen sensors, mass airflow sensor, etc.).
• Follow these sub-steps for component replacement:

  • Oxygen Sensor Replacement:

    1. Disconnect the battery negative terminal.
    2. Remove the electrical connector from the sensor.
    3. Use a socket to unthread the sensor from the exhaust pipe.
    4. Install the new sensor and torque to manufacturer's specifications (typically around 30-40 ft-lbs).
    5. Reconnect the electrical connector and battery terminal.

  • Mass Airflow Sensor Replacement:

    1. Disconnect the battery negative terminal.
    2. Remove the air intake duct to access the sensor.
    3. Disconnect the electrical connector from the sensor.
    4. Unbolt and remove the sensor.
    5. Install the new sensor and reassemble in reverse order.

4. Clear Error Codes

• After replacing any faulty components, use the OBD-II scanner to clear the error codes.
• Ensure that no new codes appear after clearing.