TOPDON AL400-A OBD2 Code Reader, 10 OBD2 Functions, Check Engine Light/Smog Emis

TOPDON AL400-A OBD2 Code Reader, 10 OBD2 Functions, Check Engine Light/Smog Emission Test / O2 Sensor Test/EVAP. FREE SOFTWARE UPDATE: this code reader can be upgraded for free, simply connect the device to a computer and install the updates through TOPDON's website.

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