What happens if the oxygen sensor goes bad?
The check engine light will illuminate. The code(s) will direct you to the faulty sensor.
An oxygen sensor is bad when it is no longer performing inside a set of parameters that are designated and optimal. The oxygen operates in a very narrow window of voltage and provides feedback to the engine to adjust the air/fuel ratio to maintain performance and emissions. If the sensor is bad and returning poor data, the performance, emissions and mileage will suffer.
DTC P0141 Indicates "O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)". Bank 1 Sensor 2 is the HO2S after the catalytic converter.On a 4 cylinder engine it is the sensor on or after cat. It could be a bad wire or a bad ecm most of the time it is the Sensor that goes bad. On a 6 cylinder engine with 4 oxygen sensors it is the bank with cylinder one, sensor after catalytic…
SImple answer is yes The Oxygen sensor measures and tells the computer about how the engine is running. If the sensor is so bad the computer turns the light on it is very bad, the computer knows it is getting bad information and goes into a program designed to allow you to drive it in for repair. Over a long period (thousands of miles) the engine will suffer extra wear due to this.
The Oxygen (O2) sensors located in the catalytic converters help to keep the vehicle running cleaner. If an oxygen sensor goes bad, the vehicle might start to misfire occasionally. The catalytic converter can become plugged up if the oxygen sensor is not working properly. This could lead to the vehicle not running at all.
Upstream Oxygen Sensor heater performance. That will be the first oxygen sensor in the exhaust pipe ( closest to the engine ) on the passenger side head. You need to check the wireing connector that hooks to the oxygen sensor for a broken wire are bad connection. If you find no problems, then replace oxygen sensor.