When the check engine light turns on, a fault code is registered in your vehicle's system computer. This fault code gives information about the failure. We will connect a code scanner to your vehicle (1996 and newer) and read the codes.  We provide you with both the code and the description for that code. 
281-359-4300
COMPUTER (ODBII) CODE SCAN
There is no charge for the computer scan service.
However, while the computer code will sometimes indicate what repair is needed, many times the code indicates the area of the system failure, not necessarily what has failed or is malfunctioning.

For example,
a code for an Oxygen Sensor might be caused by a bad oxygen sensor, but it could just as easily be from a bad Air Flow sensor, or fuel pump or any other sensor or component causing a fuel mixture problem.

In these cases, further diagnostic tests must performed by qualified technicians are needed to identify exactly what corrective action is needed.  A list of our diagnostic test services can be found here.