[Heli_Guy]

Hello,
Check Engine light came on Volt 2017 Gen 2..
Using OBS2 diagnostic tool it had 5 "unknown" codes: POD 3E, P25a2, Co513, Co515, Co516

Any idea where I can find info on these codes?

Thank you.

 

[JuneBug]

Hello,
Check Engine light came on Volt 2017 Gen 2..
Using OBS2 diagnostic tool it had 5 "unknown" codes: POD 3E, P25a2, Co513, Co515, Co516

Any idea where I can find info on these codes?

Thank you.

Did you try pushing the OnStar button? They should be able to read all the codes and even email you a diagnostic report.

 

[Heli_Guy]

Did you try pushing the OnStar button? They should be able to read all the codes and even email you a diagnostic report.

I don't pay the OnStar subscription. Too expensive.
I used an OBD-II scanner

 

[chevyman142000]

Not finding much Googling those codes either. Might have to take it to the dealership to find out what is going on.

 

[Heli_Guy]

Not finding much Googling those codes either. Might have to take it to the dealership to find out what is going on.

Yeah, I tried also with no success that's why I posted here.
Seems Chevrolet implemented their own propriety codes. Pity they don't offer a list of their unique codes.

 

[chevyman142000]

Another option, if you really don't want to go to the dealer, is buy a VCX Nano and use the GM GDS software to diagnose it. Maybe that would give you more information on the codes. I have one and used it to update a few of the modules in the car through the SPS subscription. The subscription is not required though to use the GDS software.

 

[Heli_Guy]

Another option, if you really don't want to go to the dealer, is buy a VCX Nano and use the GM GDS software to diagnose it. Maybe that would give you more information on the codes. I have one and used it to update a few of the modules in the car through the SPS subscription. The subscription is not required though to use the GDS software.

The OBD2 adapter I have is the Go Point BT1: http://gopointtech.com/product/bt1-for-apple/

would the GM GDS software work with this?
Where do I obtain the GM GDS software?

 

[JuneBug]

I don't pay the OnStar subscription. Too expensive.
I used an OBD-II scanner

You could have pushed the button. You got 5 years of OnStar free. My 2015 came with 5 years free and it transferred to me, the second owner. So I have it until 2020.

 

[chevyman142000]

Scroll down at this link and you'll see GDS2 VM. It is a virtual machine, so you will need to download something like VMware Workstation Player for free to run it. I have no idea if it will work with a bluetooth adapter.

http://www.vxdiagshop.com/wholesale/vxdiag-vcx-nano-for-gm-opel.html

 

[MikeyCVolt]

Is it possible your OBDII scanner is displaying the wrong code numbers?

Mike

 

[supchrgamx]

wonder if GM is now monitoring cell voltages in the battery