Your OBD II code reader won't work on that vehicle.
The check engine light is on because of an emission control problem. In order to shut it off you have to have it hooked up to an OBDII code reader. The code reader will give you a code as to why it is on and can shut it off for you.
An obdII code reader will tell you why the light is on and might tell you what is wrong
Transmission sensor problems on a 2004 Kia Optima will cause incorrect shifting, poor performance, and hesitation. Sensor failure can be narrowed down by connecting an OBDII code reader to the vehicle's computer.
If you are referring to OBDII trouble code U0001; It is a generic fault code (not manufacturer specific). It is an error detected in the Engine Control Module's Controller Area Network.
OBD1 code reader. Any brand will work well on this system. Very simple system that requires no sophisticated reader.
An error code P1684 from an OBDII code reader indicates that the battery had recently been disconnected. This is normal if a new battery was installed but can indicate a connection issue or grounding problem.
you can use the yellow obdII cable.
First you must determine what the fault code is. Obtain an OBDII code reader. These can be purchased from most auto parts stores, some will even run this for free. Correct the problem then using the OBDII reader erase the fault code.
An OBDII code reader is the only way, many parts stores will do it for free.
The OBDII port can always be found within a foot of the steering column usually at the bottom or under the dash.
Use an OBDII code reader or a scan tool or try disconnecting the battery for a while.
You must have a code reader to interface with the OBDII data port under the dash.
Sorry, only a scanner can retrieve trouble codes on OBDII vehicles.....
CAN=Controller Area Network. The CAN suffex is a set of extended protocols. Simply put the OBDIICAN is more advanced then the standard OBDII reader.
To do this correctly you need an OBDII reader. The reader will read the code and then give you the option to clear it. Most parts stores will have one they can loan you or do it for you.
The check engine light is on because of an emission control problem. In order to shut it off you have to have it hooked up to an OBDII code reader. The code reader will give you a code as to why it is on and can shut it off for you.
This task requires an OBDII code reader. Your mechanic will have one or you can buy a cheap one from your local parts place.