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Discussion Starter · #1 ·
Hi, I bought a VCI from AliExpress. For the software I used Diagbox 7.58 which I downloaded the VM from here.

I could do a global test and all ECU would respond except for engine and automatic gearbox ECU. If I tried to do a test by ECU, both of those ECU would not replied either.

When I take my car to a mechanic, his PP2000 could read auto gearbox ECU (I don't know about engine ECU since he didn't do a global test). So I guess my car is not the problem.

I guess my question is it a software or a hardware problem? Do I need to downgrade to PP2000 instead of Diagbox for older car (semi-mux 406)?
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