How to Detect a Faulty Oxygen Sensor?
1 Answers
You can determine the condition of an oxygen sensor by observing the color at its tip. Below are methods to detect a faulty oxygen sensor: 1. Light gray tip: This is the normal color of an oxygen sensor. 2. White tip: Caused by silicon contamination; the oxygen sensor must be replaced. 3. Brown tip: Caused by lead contamination; if severe, the oxygen sensor must be replaced. 4. Black tip: Caused by carbon deposits; after addressing the engine's carbon deposit issue, the deposits on the oxygen sensor can clear automatically. Noise in the oxygen sensor signal is typically caused by the following reasons: 1. Poor ignition in cylinders: Various root causes, including ignition system issues, poor ignition due to cylinder pressure, vacuum leaks, and uneven fuel injector performance. 2. System design: Factors such as varying intake manifold runner lengths. 3. Aging of the engine and components exacerbating system design issues: For example, uneven cylinder pressure amplifying problems related to different intake manifold runner lengths. 4. System design: Variations in intake manifold runners, among others.