Over time it may reset itself. But the best thing to do is reset it with and OBD2 scan tool.
Your MIL ( malfunction indicator light ) will be lit and a code for your O2 sensor will be logged.
The most common causes of check engine light malfunction are a faulty oxygen sensor, loose or faulty gas cap, or a faulty catalytic converter. These are all easily fixed problems.
Coolant is low or a sensor malfunction.
If you have an oxygen sensor problem then there should be a check engine light "on." Have a repair shop scan and diagnosis the problem. You may not truly have a problem with the oxygen sensor as it could be a vacuum leak that makes the o2 sensor set a code.
O2 sensor circuit malfunction (sensor 1). I got this directly out of the Haynes Repair Manual, so I personally suggest you replace your Oxygen sensors.
Coolant level low or level sensor malfunction.Coolant level low or level sensor malfunction.
Where is the light sensor is on 2003 C 320, and how to check it. My dash board message says "1 Malfunction" check light sensor. Please help.. Thanks...
You can not. Replacement of the oxygen sensor is the only way.
where is the bank 1/sensor 2 O2 sensor on a dodge caravan...to the rear of the catalitic converter or to the engine (front) side of the converter?
The car hiccupping or not running smoothly when stopped at a light can be caused by the Oxygen Sensor malfunction. Some cars have two sensors of this type.
A malfunction has been detected , could be a sensor ?
A malfunction has been detected , could be a sensor