ERROR 7 On ESP32 Wrover Board

[vsaravind007]

ERROR 7 On ESP32 Wrover Board

[vsaravind007]

Apologies for the later response, couldn't test it yet. Will be testing it today or tomorrow, I'll make sure to update here.

[vsaravind007]

@PowerBroker2 My issue has been resolved, thanks for the library and the efforts! I'm closing the ticket :)

[PowerBroker2]

I'll fix the example code so that the compilation error isn't a problem anymore. Curious, are you testing with the car on and running?

[vsaravind007]

Yes, the car was running, its a Skoda Octavia MK2 TDI if that helps. Does it have something to do with the OBD2 protocol?

[PowerBroker2]

It might actually have something to do with the OBD interface if you're car was made on or before 2008. When was your car made?

[vsaravind007]

Its a 2008 model, Arduino with a CANBus Shield works fine and responds to all PIDs correctly.

[PowerBroker2]

I found a bug in the code and applied a fix in version 2.0.12. Try testing the new ESP32 Bluetooth Serial example. If it still doesn't work for you, try the ESP32 test sketch and post what happens when you send the following ELM327 commands:

AT E0 //Echo off
AT S0 //Spaces off
AT SP0 //Mode --> Automatic
010C //Query RPM

[vsaravind007]

Hi @PowerBroker2, thanks for the quick update, I'll check with the latest version & report back.

[PowerBroker2]

Did you get it to work?

[pascaltippelt]

Hi!
I am having the same issue. I am using a ESP32 (glued on a TTGO T4, but it is a box standart ESP32). When I try to connect over BT to my OBD-dongle (verified working with Android Smartphone + Torque) I only get "Error 7":

Outpup with my own program:

Output with you ESP32 test program

But as you can see it works with Torque

I use a 2000 smart car wich uses the ISO14230-4 KWP fast protocoll.

[PowerBroker2]

@pascaltippelt Please create a new issue instead of hijacking this one. In your new issue, please make sure to post your entire sketch properly formatted in addition to the screenshots you have here.

[PowerBroker2]

Glad to help!

@vsaravind007 Can I ask how you solved it?