Amber
The colour helps indicate urgency, but exact behaviour can vary by manufacturer.
Dashboard Warning Light
Check Engine / MIL
Engine or emissions fault; flashing usually indicates a severe misfire. The usual first step is: Steady: diagnose soon. Flashing: reduce speed and stop if running poorly.
Inspect soon
Use this as a quick triage label before confirming in your owner manual.
Steady: diagnose soon. Flashing: reduce speed and stop if running poorly
Check the matching manual page for your exact brand, model and year when possible.
Common causes to check
- Loose or damaged fuel cap
- Ignition coil, spark plug or misfire fault
- Oxygen sensor, air-fuel sensor or MAF/vacuum-leak issue
- Catalytic converter or emissions-control fault
- Wiring, connector or ECU-related fault
Driver checks before replacing parts
- Check that the fuel cap is tight if your vehicle uses one.
- If the light is flashing or the engine runs rough, reduce speed and stop safely.
- Scan for OBD-II codes before replacing parts.
- Avoid hard acceleration, high speed and heavy load until diagnosed.
When to stop driving
Stop safely if the light flashes, the engine runs very rough, the car overheats, smoke appears, fuel smell is strong, or power drops suddenly.
What it usually means
Engine or emissions fault; flashing usually indicates a severe misfire.
What to do next
Steady: diagnose soon. Flashing: reduce speed and stop if running poorly. If the vehicle feels unsafe, stop in a safe place and arrange professional inspection.
Can I drive with the Check Engine / MIL light on?
You may usually drive carefully if the car feels normal, but avoid hard driving and arrange diagnosis soon. Stop if the light flashes or the car overheats, loses braking, steering, or power.
First step: Steady: diagnose soon. Flashing: reduce speed and stop if running poorly. If the warning appears with noise, smoke, overheating, poor braking, heavy steering, or reduced power, stop safely and get professional help.
Quick answers
What does the Check Engine / MIL dashboard light mean?
Engine or emissions fault; flashing usually indicates a severe misfire.
Can I drive with the Check Engine / MIL light on?
You may usually drive carefully if the car feels normal, but avoid hard driving and arrange diagnosis soon. Stop if the light flashes or the car overheats, loses braking, steering, or power.
What should I check first when the Check Engine / MIL light appears?
Start with this step: Steady: diagnose soon. Flashing: reduce speed and stop if running poorly. Then confirm the exact symbol behaviour in the owner manual for your car brand, model and year.