Newbie question: I have had an intermittent engine light going on and off on my 2017 Porsche Cayenne Hybrid to do with the battery. So I bought a Veepeak OBDCheck BLE device and plugged it in and connected to it using my Android phone and the Torque app. The bluetooth connection appears to work flawlessly. However, when I try to read current, pending, or historical fault codes then Torque says there are no codes available. Is this to be expected if an engine light goes on and then off a few hours later? Seems like the Porsche dealership could read the codes using their equipment. Do they interface using a different hardware interface?

Thanks.

Looks like Porsche dealership is able to read the historical fault codes even with engine light off.

I noticed that Torque has an option to read ‘historical fault codes’… is that not the same thing?

Also, a Porsche technician suggested to me that there are two different places to read fault codes; one regular set of fault codes, and another set for the hybrid system. Does Torque differentiate between two such different systems?

Same Porsche technician says he uses a snap-on scanner device to read the fault codes. snap-on is a third-party so presumably this means that Torque as a third party could also read the info too?

SimonHF
control units HVBAT and HV have addresses 7E5, 7E6 and to read Errors on these blocks you need the command 19022C
you can create on the instrument panel screen two devices of the type “Send command OBD”
atsh7e5
1003
19022c

click the Test button