Volkswagen Golf MK7.5 (2020-Present) check engine light on what does it mean

Solution

1. Preparation

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

2. Address Error Codes

• Sub-steps:
  1. Review the error codes obtained from the OBD-II scanner.
  2. Research the codes to determine specific components affected (e.g., P0171 for a lean condition).
  3. Make a list of any necessary parts based on the codes.

3. Replace Faulty Components

• Sub-steps:
  1. If the air filter is dirty, remove the air filter housing and replace the filter with a new one.
  2. For faulty spark plugs, disconnect the ignition coil connectors, remove the old spark plugs, and install new ones, ensuring proper torque specifications (typically around 15 ft-lbs).
  3. If necessary, replace any damaged ignition coils as well.

4. Clear Error Codes

• Sub-steps:
  1. Use the OBD-II scanner to clear the error codes after performing repairs.
  2. Ensure all connections are secure and components are installed correctly.

5. Test Drive

• Sub-steps:
  1. Start the engine and allow it to warm up.
  2. Take the vehicle for a test drive to monitor performance and check if the check engine light reappears.