What Does the Check Engine Light Actually Mean?

Solid vs. Flashing:

Solid = issue to check soon. Flashing = active misfire — pull over safely and call a mechanic immediately.

Most Common Causes:

1. Loose or Faulty Gas Cap — Simple fix.
2. Oxygen Sensor Failure — Reduces fuel efficiency, can damage catalytic converter.
3. Catalytic Converter Issues — Serious and expensive.
4. Spark Plug or Ignition Coil Problems — Misfires, rough idling.
5. Mass Airflow Sensor Failure — Poor performance.
6. EGR Valve Issues — Common in older vehicles.

Conclusion

At Sond Auto Centre we use advanced diagnostic equipment on both new and old vehicles.