What causes the yellow engine oxygen sensor fault light to come on?
1 Answers
When the engine fault light illuminates yellow, it indicates an engine malfunction. Here are the relevant details: 1. Causes of the fault: Issues with the fuel quality or excessive engine carbon buildup can lead to poor combustion conditions in the engine. Problems such as clogged fuel injectors or carbon buildup in the intake valves can trigger the fault light alarm. 2. Automotive oxygen sensor: The automotive oxygen sensor is a crucial feedback sensor in the electronic fuel injection engine control system. It plays a key role in controlling vehicle exhaust emissions, reducing environmental pollution from vehicles, and improving the fuel combustion quality of the engine. Oxygen sensors are typically installed on the engine's exhaust pipe.