why does my Volvo XC60 Second Generation (2018-2024) check engine light flash while driving

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, fuel pressure gauge, cleaning supplies.
• Disconnect the battery to ensure safety while working on electrical components.

2. Address Ignition System Issues

• Sub-steps:
  1. Remove engine cover (if applicable) using a socket set.
  2. Disconnect the ignition coils and spark plugs.
  3. Inspect spark plugs for wear (gaps, carbon buildup) and replace if necessary (use OEM specifications).
  4. Test ignition coils with a multimeter for resistance; replace faulty coils.
  5. Reinstall components and reconnect the battery.

3. Inspect Fuel System

• Sub-steps:
  1. Check fuel pressure using a fuel pressure gauge to ensure it meets manufacturer specifications.
  2. If pressure is low, inspect the fuel pump and filter; replace if necessary.
  3. Remove fuel injectors and clean them using a specialized injector cleaning kit or replace if they are clogged.
  4. Reinstall fuel injectors and ensure all connections are secure.

4. Clean MAF Sensor and Throttle Body

• Sub-steps:
  1. Disconnect the MAF sensor and remove it from the intake.
  2. Use MAF cleaner to gently clean the sensor elements.
  3. Remove the throttle body and clean it with throttle body cleaner and a soft cloth.
  4. Reinstall both components securely.

5. Test and Clear Error Codes

• Sub-steps:
  1. Reconnect the battery and use the OBD-II scanner to clear any error codes.
  2. Start the engine and allow it to idle, checking for any reoccurrence of the check engine light.