What Does It Mean When the Car Engine's Yellow Light Comes On?
2 Answers
The car engine's yellow light indicates a fault in the engine's exhaust system. If it turns off a few seconds after starting the engine, it means the system is undergoing a normal self-check. If it stays on continuously, there may be a fault in the exhaust system. If it flashes, it indicates engine misfiring, which could damage the catalytic converter. To determine the exact cause, professional diagnosis is required. When the engine (exhaust system) warning light is on, if the coolant temperature gauge and oil pressure warning light are not activated, the vehicle can still be driven. However, it is essential to drive cautiously at a slow speed and seek the nearest auto repair shop for inspection. If the coolant temperature is too high or the oil pressure warning light is also on, and you can clearly feel the vehicle malfunctioning, you should immediately pull over and request assistance.
Oh no, my car's check engine light is on yellow, which is quite common in older vehicles. It's mainly due to aging or dirty oxygen sensors causing inaccurate exhaust monitoring and triggering the light; it could also be a clogged or faulty catalytic converter leading to excessive emissions. Don't overlook issues with spark plugs or ignition coils—misfiring can cause severe engine shaking. Clogged fuel injectors in the fuel system or a faulty mass airflow sensor are also common culprits. A vacuum leak can cause air intake imbalance. My advice is to quickly scan for trouble codes using a Bluetooth OBD tool and act based on the codes. Minor issues can be fixed by cleaning sensors yourself, but for serious problems, head to a repair shop—safe driving shouldn't be ignored. Regular maintenance can help prevent this issue.