The ebay one basically just gives the error codes, similar result to bridging terminal 5 and 6 on your obd2 port
you would then have to refer to a chart for what that error code means, you wouldnt have the ability to actually
treset or do anything much with that error code and more often than not getting the error codes isnt the be all and
end all, for example I had a faulty relay on my VX it was causing extremely hard starting when cold, the error codes given for this situation
where as follows
P1361 Electronic spark timing circuit shorted to voltage
P1372 Crankshaft position sensor no crankshaft pulse
there are also some others following the initial two error codes that refer to tranmission (these may be older codes as transmission isnt giving any probs)
P0740 Transmission Torque Converter Clutch Circuit Malfunction
P0756 Transmission Shift Solenoid B Performance or Stuck Off
P0757 Transmission Shift Solenoid B Stuck On
P0860 Gear Shift Module Communication Circuit Malfunction
In an ideal world the on board diagnostics would have said "faulty Engine Control Relay"
but instead it gave all of the above, were they a help diagnosing the problem? NO Not at all.
Out of desperation for a cost effective solution to our auto problems we look for a magic wand to solve our probs
often in the form of a cheap error code scanner so we dont have to trott along to holden and get ripped off.
This morning I went to a local auto sparky to get the airbag code reset on my VX (I replaced the clock spring yesterday).
He had a u beaut scanner ($6500 worth) It wasnt a tech 2 they are probably about double that.
The moral of the story is this what you can get off ebay for around $100 bucks is not a magic fix all wand that will solve your problems
if it was he would be sold out and we would all have them
If you do buy one put it through its paces and let us know how you went and what its capabilities are.
Kind regards Chris