An illuminated “Check Engine” or “Service Engine Soon” light indicates that a vehicle system, such as the ignition, fuel injection or emission control, is not operating properly, even if the vehicle appears to be running normally.

Only the right diagnostic equipment can determine the problem detected by your car’s onboard diagnostic system (OBD).

Ignoring a check engine light can negatively impact your fuel economy or cause lasting damage and result in more costly repairs. For this reason, it is worthwhile to get any illuminated “Check Engine” or “Service Engine Soon” checked out as soon as you can.

• A steady yellow light should be diagnosed at the first convenient opportunity.
• A flashing yellow light indicates a problem that is currently happening and may require immediate attention.
• A red warning light indicates a serious problem. Pull over as soon as it is safe to do so and call for assistance.
• A technician connects a diagnostic scan tool to your car’s computer system to determine the problem.
• Further testing and diagnosis may be required to pinpoint the exact cause of the problem.
• Once the problem is pinpointed, repairs are made and the light is reset.

Please refer to our vehicle maintenance chart for more details on the recommended schedule for maintenance.

If you have a dashboard indicator light illuminated in your vehicle, we recommend you get it checked out as soon as you can. 

We are here to help, so please schedule an appointment with an Active Green + Ross Complete Tire & Auto Centre nearest you to keep your car rolling.