What does the yellow engine light on the dashboard mean?
1 Answers
"The yellow engine light on the dashboard indicates that the engine malfunction indicator light is on, meaning there is a fault with the vehicle's engine. Possible reasons for the engine light to illuminate include turbocharger issues, substandard exhaust emissions, clogged fuel injectors, throttle position sensor problems, and in some vehicles, transmission system faults may also be indicated through the engine light. Specific causes are as follows: Sensor issues: Sensors such as coolant temperature, crankshaft position, air flow, intake air temperature, and oxygen sensors. When these sensors are damaged, have poor connections, or experience signal interruptions, the vehicle's ECU cannot accurately obtain engine data, triggering the engine light. In such cases, sensor inspection and repair are necessary. Turbocharger issues: Intake boost pipes and turbochargers can also cause the engine light to illuminate. The most common issue is turbocharger damage, often accompanied by symptoms such as oil leaks, excessive oil consumption, reduced power, metallic noises, or blue/black smoke from the exhaust. Turbocharger repair is required in this situation. Exhaust system issues: Components like the rear oxygen sensor, catalytic converter, exhaust camshaft, and bearings. The most frequent cause is catalytic converter failure, which triggers the engine light. Factors leading to catalytic converter failure include using leaded gasoline, lead- or silicon-containing lubricant additives, physical damage to the converter, or fuel supply system malfunctions. Catalytic converter repair is needed in this case."
