What Does It Mean When Your Emissions Light Is On? - S&S Transmission (2024)

FAQs

What Does It Mean When Your Emissions Light Is On? - S&S Transmission? ›

Causes Why the Emissions Light Turn On

Some common issues that trigger the warning light include a loose gas cap, a clogged air filter, a bad catalytic converter, a failing oxygen sensor, and other faulty engine sensors. You can still drive with an illuminated check emission light, but it's not recommended as it could lead to engine damage.

Although it is usually possible to drive with your engine management light (EML) on, it is strongly advisable to have the problem investigated and fixed by a mechanic as soon as possible.

Depending on the problem, possible solutions may include replacing damaged components such as the oxygen sensor, catalytic converter, or a vacuum hose. Leaking connections or damaged wiring may also be repaired or replaced to ensure the emission control system is working well.

If your vehicle failed emission testing and it needs repairing, then the cost will depend on the exact cause, but the repair work typically starts around $200. Replacing your exhaust system depends on the type of car you drive, but that work starts at approximately $175. Q : How long should my exhaust system last?

Turn the key in the ignition to the 'ON' position. Reconnect the positive battery cable and turn the key in the ignition, wait a few minutes and the CEL should be gone. If neither of these work, it's best to take your vehicle into a garage so that a professional can reset your light.

Some common causes for the emission light on car illuminating are: Emission system fault – This is when the engine is burning too much fuel, increasing your carbon footprint. The emission light on car could also be on because the system is not burning enough fuel, or if the sensor is broken.

Once you see the check engine light, it is safe to drive with the light on for 50 to 100 miles. This is because if the issue is with the sensors, then this will buy some time for it to reset, turning the check engine light off. However, scan the computer for the appropriate error codes if the light remains.

Arguably the most notorious warning light, the engine management or check engine light indicates a potential issue with the vehicle's engine or emissions system. This light can be triggered by a range of issues, from minor issues such as a faulty electrical sensor to a more complex fault with your catalytic converter.

It is not good when there is an emissions problem or exhaust system failure. It can cause performance issues in your engine, potentially leading to costly internal damage. It's also bad for you and the environment when harmful fumes and carbon monoxide are getting out more than they should.

How do I reset my emissions light? ›

Simply place your key into the ignition and turn it on for 1-2 seconds, then turn it off for 1-2 seconds. Repeat this step three or four times. If the check engine light remains after the reset, you might still have a problem with your vehicle.

Visit Your Local AutoZone Store for Free Fix Finder Service

AutoZone offers a complimentary Fix Finder service that efficiently diagnoses warning lights, including Check Engine, ABS, and maintenance indicators. Simply visit your nearest AutoZone store when a warning light appears on your vehicle's dashboard.

The largest source of greenhouse gas emissions from human activities in the United States is from burning fossil fuels for electricity, heat, and transportation. EPA tracks total U.S. emissions by publishing the Inventory of U.S. Greenhouse Gas Emissions and Sinks.

You should bring your vehicle to a qualified service center as soon as possible for auto repairs or maintenance. Schedule an appointment today. Vehicles with Check Engine lights typically have a diagnostic port that a technician can hook equipment up to for retrieving trouble codes and other diagnostic information.

If your light is on, it typically means the car's emissions control system is faulty, and the vehicle is polluting the air beyond allowable federal standards. A vehicle in this condition would fail an emissions inspection or smog check.

Emissions system fault

One of the most common causes of an EML is an issue with the car's emissions system, which uses a series of sensors to ensure the system is operating correctly. One key component is the oxygen sensor, with many cars having more than one.

The on-off method is the equivalent fix for a vehicle's check engine light. It forces the computer to refresh its saved state through a reboot. Simply place your key into the ignition and turn it on for 1-2 seconds, then turn it off for 1-2 seconds. Repeat this step three or four times.