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Re: GTC ST05 Oxygen Sensor Tester
Posted to Tool & Equipment Forum on 5/8/2019 1 Reply

The PCM does a better job of testing the O2’s ability. The software in the PCM is programmed specifically for the vehicle. That tester is generic, one size fits all. I think it has some value, but it won’t do a better job than your scan tool reading data PID’s... Login to read more.

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