Why the Check Engine Light Comes and Goes

Common Causes of an Intermittent Check Engine Light

1. Loose or Failing Gas Cap

2. Oxygen (O2) Sensor Issues

3. Spark Plug or Ignition Coil Misfires

4. Catalytic Converter Efficiency Decline

5. Vacuum Leaks or Electrical Connection Faults

Why Ignoring It Is Risky

What To Do If Your Check Engine Light Turns On and Off

The Main Street Tire and Auto Difference

Why Chantilly Drivers Trust Us

The Bottom Line