2001 Kia Rio, 70,000 miles, check engine light on, stays on. Been told it is more than likely because of bad oxygen sensors. The Rio I have been told takes 2.
When is it recommended to change them? Would that be normal for them to go at this little mileage?
Thanks.|||They do go bad .
But most of the time when a code for a o2 sensor comes up .
It is from something else.
Like if you have a intake vacuum leak dirty mass air flow sensor.
And so on Willl cause a lean or rich o2 sensor reading.
Over fueling for long a long time or a hard direct hit on them wil damage them.
Have it scaned to see what codes come up is just o2 sensors
replace them.
If a lean or rich codes come up as well fix first them first.
Hope this helps .|||the question is how in the hell did a kia rio get up to 70000 miles???|||the o2 sensor will be of the exhaust by the manifold,very easy to replace,but if in doubt take to a garage to be safe only replace them if the engine management light comes on and gives you that code|||Yes its normal ,Go have it replaced before spark plugs go out too|||96 and up vehicles are very good at self diagnostics and will let you know as yours may be doing. there are codes that can be related to the oxygen sensor and not actually be the oxygen sensor thats bad, so get it diagnosed by a pro so you don%26#039;t waste money. the average life of an oxygen sensor on an obd2 car (96 and up) is about 100k.|||How often do you change oxygen sensors? Never, in a perfect world.
There are about a thousand possible causes for a check engine light. Your car has 2 Oxygen Sensors. What are the odds that is really the problem. Blaming O2 sensors is what the ignorant do in a Check Engine light situation.
At the very least you need to have the codes read or you%26#039;ll just be throwing money at a problem without knowing what the problem is. Ideally you should have a proper diagnostic done.
ASE Certified Automotive Service Advisor
