Hi there
What does it matter I'm using a OBD sensor that I plug into the plug where you got a plug-in diagnostic my car is very heavy on juice and everything else is perfect my short-term fuel pressure long-term fuel pressure and my oxygen sensors are working perfect all I can think is that the speed sensor has got something to do with the fuel economy. My car speedometer is working perfect but the OBD2 says that the speed sensor is faulty