Reset it with an OBD2 scan tool. If it came on after replacing the sensors you may have another problem. Reset it and see if it comes back on.
I had all sensors replaced in my 03 Trailblazer and the check engine light stiil comes on. Why?
You can not reset your oxygen sensors. You can only replace them. To reset the check engine light you will have to get that done by a repair shop with a computor. If replacing the sensors does not repair the problem then check for a vacuum leak.
There are sensors all over the engine that can turn the check engine light on.There are sensors all over the engine that can turn the check engine light on.
Check engine light will come on for various reasons. The o2 sensors could be one of them. If your belt breaks the light will come on and the engine will over heat. I mentioned the o2 sensor because when it comes on for this reason some people have had that light on for years without replacing the sensor.
Then you may want to have a mechanic check it out.
what sensors have you replaced?? i am assuming the oxygen sensors. i need a code number to tell you what is wrong. if its a p0420 its probabily the catalytic converter. mabye a p0141-mass air flow needs to be cleaned
the check engine light could stay on because of other sensors. for example,the power steering sensor could be bad...this will cause the engine light to come on and other sensors could cause the engine light to come on. just get rid of the van. most sensors when they go bad cost anywhere from $200-$600 just because of the location of the sensor. manufacture put sensors in hard to reach places to keep you from replacing them,so that you will bring it in to dealer and pay over inflated repair cost.
Try replacing your Oxygen sensors they are located on the catalytic converter. I had the same problem with my 94 Caprice and that turned out to be the problem.
There are many sensors that can trip the check engine light to come on.
Nothing :d Not so sure that's true. Improper voltage or short circuits can affect the sensors functions which can give false readings. Always check your circuits before replacing your sensors.
No, diesels don't have O2 sensors.
Yes but the check engine light will be on.