What to Do When the Car Engine Icon Lights Up Yellow?
2 Answers
When the car engine icon lights up yellow, it indicates an engine malfunction that requires inspection and repair at a 4S dealership. Below are specific details regarding the engine icon displayed on the dashboard: 1. In normal vehicles, when the key is turned to the ON position, the engine malfunction light on the dashboard will illuminate and automatically turn off after the car starts. 2. If the engine icon remains lit after the vehicle starts, it signifies an engine fault. 3. The engine fault signal is issued by the ECU (Engine Control Unit), which controls all electronic components of the engine, such as the electronic throttle, fuel injectors, alternator, fuel pump, etc., covering various systems including intake, exhaust, fuel, ignition, and timing.
Last time I was driving on the road, the engine light suddenly turned yellow, which gave me a start, but I learned my lesson later. A yellow light isn't as urgent as a red one; it usually indicates minor issues like sensor malfunctions or abnormalities in the emission system, possibly due to higher exhaust emissions or aging spark plugs. Don't panic—just slow down and drive steadily, then find a safe place to pull over. The first step is to check if the gas cap is tightened properly, as sometimes a loose cap can trigger the light. If that doesn't work, you'll need to visit a repair shop or use an OBD scanner to diagnose the trouble code, otherwise the problem might worsen and consume more fuel. Ignoring it could turn a small issue into a major one, leading to higher costs or reduced performance. In short, don't delay when the light comes on—do a quick check and then promptly consult a professional to get it fixed, safety first.
