Why is the O2 sensor on my Chevy Cruze bad?
By using a OBDII scanner you can determine exactly which sensor is bad, and what is wrong with it. Your Cruze’s oxygen sensors are responsible for helping to keep your engine running at optimal efficiency. The engine management computer uses the data from all of the O2 sensors to keep the air/fuel mixture optimized.
What happens if your O2 sensor goes bad?
Oxygen sensors play a vital role in both engine management and emissions control. When an O2 (oxygen) sensor go bad, it’ll cause your Chevy Cruze ‘s engine to run less efficiently.
What causes an oxygen sensor to read O2 content?
Restricted fuel filter or pinched fuel lines. Incorrect input from other sensors, such as the Mass Air Flow Sensor. The O2 sensors only read (O2) content in the exhaust. So, If you have all that unburned fuel from incomplete combustion then, you also have all that unburned (O2).
Where is the O2 sensor in the exhaust manifold?
The oxygen (O2) sensor is the key sensor in the fuel mixture feedback control loop. Mounted in the exhaust manifold, the O2 sensor monitors the amount of unburned oxygen in the exhaust.
What causes a lean reading on an O2 sensor?
High (O2) content in exhaust equals a lean reading also causing engine misfires. There are also some other possibilities such as an internally leaking EGR system. This will typically set a separate code. A leak in the exhaust system before the (O2) sensor will also cause incorrect readings.
What does a high voltage O2 sensor indicate?
A voltage output higher than the base amount around 0.8 V (800 mV) DC., would indicate a rich mixture. So, having this information in real time, helps determine whether the air/fuel ratio is rich or lean. Finally, if your (O2) sensor fails to function properly; your engine management computer cannot determine the air to fuel ratio.
Can a bad O2 sensor cause an illuminated check engine light?
Faulty O2 sensors are a common cause of illuminated Check Engine Lights. Still, because the light may indicate a variety of other problems, it is important to watch for bad O2 sensor symptoms. If you notice any, repairing the problem as quickly as possible is a good idea to prevent further trouble.
Can a defective O2 sensor cause carbon monoxide?
A defective O2 sensor will cause increased carbon monoxide emissions. More about oxygen sensors. 3. Defective Manifold Absolute Pressure (MAP) Sensor – The MAP sensor determines the level of vacuum created during an engine’s intake stroke, and sends this information to the ECU.