answersLogoWhite

0


Best Answer

In most cases you will get a Check Engine Light. Be aware, a Check Engine light does not always mean a bad O2 Sensor. Your local auto-parts stores sometimes offer free OBD-II scan tool check.

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How do you know if o2 sensor bad?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

How do you know if sensor is bad?

how do i know if the o2 sensor is bad. The check engine light would illuminate and the code(s) set would steer you to the faulty O2 sensor.


How do know which O2 sensor to replace?

You need a engine scanner and hook it up and it will tell you what sensor is bad.


What are the symptoms of a bad TDC sensor?

what are the symptoms of bad tdc o2 sensor


How do you detect bad o2 sensor?

You can visit a local auto repair store to have them detect whether your O2 sensor is bad or not. They can normally do this for free in a few minutes. A bad O2 sensor would trip the check engine light to come on. The code retrieved would lead you to the failed O2 sensor.


How can you tell if the o2 sensor is bad on a 2000 mercury sable?

The check engine light would illuminate and set a code for the bad O2 sensor.


How long before a 02 sensor goes bad on a 2000 s10 pickup?

When a O2 sensor goes bad the check engine light will illuminate. The code set in the ecm will lead you to which O2 sensor is bad.


What is a g2 sensor?

Do you know your alphabet ? o2 sensor ?


How do you fix an oxygen sensor?

Unfortunately there is no fixing an O2 sensor. If the "check engine" light is on due to an O2 sensor, it can only be remedied by replacing the bad sensor.


Will bad O2 sensor cause bad gas mileage?

yes


Will bad O2 sensor affect gas mileage?

A bad O2 sensor can affect gas mileage. It is an emissions sensor, so when it goes bad, it does not reflect emissions performance on the car, which could cost a lot in gasoline.


How do you know if I need new o2 sensors for my 99 Chevy Suburban?

When a O2 sensor goes bad your check engine light will go on and set a code.


I want to know how to check if an o2 sensor works.?

It is recommended that you first read about how the O2 sensor works to familiarize yourself with the part. Perform a visual inspection of the sensor, confirm all connections are sound, and there are no cracks or other signs of physical damage to the sensor. Check your fuses to confirm that the O2 sensor is bad. If the fuse is good, you will require a voltmeter and test the sensor.