When your car displays the message “check emission system”, it indicates a problem with the vehicle’s exhaust or emission system. The first step is identifying the cause, which can be done by scanning your car’s onboard diagnostic system (OBD-II) using a code reader. This tool will provide information detailing the type and area of the issue: it might be a malfunctioning sensor, catalytic converter, or a leak in the car’s vacuum system.
Ignoring the emissions system warning can lead to severe damage to your car’s engine and increased harmful emissions detrimental to the environment. Call Sant Automotive today at 314-849-2900, request a custom maintenance log, and check the MO emissions test requirements.
Issues that can Cause a Check Emissions Light to Turn on:
- A malfunctioning sensor: If the issue is a faulty sensor, such as the oxygen or mass air flow sensor, it will need to be replaced. These sensors measure oxygen levels and air flow rates in the engine, respectively, and are crucial for proper vehicle operation.
- A failing catalytic converter: A failing catalytic converter may also trigger an emission system warning. In this case, seek professional help to replace the part as it involves complex mechanisms.
- A vacuum leak: In the case of a vacuum leak, it might affect the engine’s combustion process, causing the car to run inefficiently and emit more pollutants. Identifying the precise location of the leak can be challenging, but once discovered, it can either be fixed by tightening loose components or replacing damaged hoses.