Seeing the check engine light illuminate on your dashboard can be stressful, especially when the vehicle seems to be running normally. This warning light is part of your car’s onboard diagnostic system and signals that something isn’t functioning as it should. While some issues are minor, others can lead to serious mechanical problems if ignored. At Exclusive Car Care, we provide expert check engine light diagnostics and repair in the greater Phoenix area. Here’s a look at four common check engine light problems. Failing Oxygen Sensor The oxygen sensor measures how much oxygen is present in the exhaust and helps regulate the air-fuel mixture. When this sensor fails, the engine may run inefficiently, leading to reduced fuel-economy and higher emissions. A malfunctioning oxygen sensor can also put extra strain on other components, such as the catalytic converter, making timely repair especially important. Mass Air Flow Sensor Problems The mass air flow sensor monitors the amount of air entering the engine so the fuel system can deliver the correct mixture. If this sensor becomes dirty or fails, it can cause rough idling, hesitation, or stalling. A faulty mass air flow sensor often triggers the check engine light and can significantly affect engine performance if left unaddressed. Ignition System Misfires Problems with spark plugs, ignition coils, or wiring can cause engine misfires, which commonly activate the check engine light. Misfires may result in rough running, poor acceleration, or a noticeable loss of power. Regular ignition system maintenance, such as spark plug replacement, can help prevent such issues. Catalytic Converter Issues The catalytic converter plays a crucial role in reducing harmful emissions. When it becomes clogged or begins to fail, the check engine light may come on along with symptoms such as poor acceleration or unusual exhaust smells. Check Engine Light Repair in Phoenix, AZ For auto repair in Phoenix and the surrounding area, contact Exclusive Car Care at  602-830-4112  . At our local auto shop, we can expertly handle your vehicle’s repair and maintenance needs. Feel free to give us a call to make an appointment!