What Causes the Engine Malfunction Light to Illuminate in Yellow?
1 Answers
Engine malfunction lights come in two colors: yellow and red. Yellow indicates a warning, while red signifies a prohibition. When the yellow malfunction light is on, it means that certain system parameters in the vehicle may have exceeded the set range. The vehicle can still be driven, but some functions may be limited. When the red malfunction light is on, the vehicle must be stopped immediately, the engine must be turned off, and driving must be prohibited. The issue must then be checked. Generally, common causes for the engine malfunction light to illuminate include: sensor failure, oil quality issues, poor mixture combustion, turbocharging problems, intake issues, exhaust problems, and anti-theft system malfunctions. If the engine malfunction light comes on, follow these steps: After the engine malfunction light illuminates, first check if the engine is running normally. Look for issues such as shaking, black smoke, or difficulty starting. If any of these are present, avoid restarting the engine. Note: if the red light is on, do not restart the engine under any circumstances. If the engine is running normally and the vehicle can be driven, proceed to a service station as soon as possible to diagnose the issue. Service stations can easily read the fault codes using a portable diagnostic tool to obtain targeted repair information. If the engine is running normally, the owner can also try gently reconnecting various wiring harness connectors, as a loose connection may be the cause. Alternatively, repeatedly turning the key to the ON position may help reset the light.
