what are the symptoms of a bad O2 sensor
Symptoms of a Bad Oxygen Sensor. When you have a bad oxygen sensor, your vehicle will run less efficiently, it can sometimes have a poor idle, erratic jerking at steady throttle, hard starting problems, cause the check engine light to come on, and will cause high fuel consumption.owever, replacing an oxygen sensor is a job that you can do yourself, (as long as the O2 sensor is not completely rotted into the pipe or catalytic converter) thereby saving you precious time and money. Letâs take a closer look at just what an oxygen sensor does and the steps you can take to do the work yourself.