OBD 2 Real-time Oxygen Sensor Test Automobile Fault Detector V317 Code Reader
V317 is a trolley card reader product, with the following functions Model: V317. Support nine standard protocols of OBD II/EOBD;. The red light represents the power signal light: the yellow light represents the fault code signal light, and the yellow light is on when the fault code is detected: the green light represents the connection adapter signal light.