Posts Tagged: What oxygen sensor codes mean

Understanding Oxygen Sensor Codes: Myths and Facts

Troubleshooting Oxygen Sensor Codes: What You Need to Know Oxygen sensors and air-fuel ratio sensors have two separate components; the heater and the sensor. When you get an oxygen sensor code, that does NOT automatically mean the sensor is bad. In fact, 80% of all oxygen sensors returned under warranty are perfectly good. In other words, the sensors were telling the truth and the cause of the code was due to an incorrect air fuel mixture or an air or exhaust leak. The same applies to oxygen sensor heater codes. … Read More