I share an article about how to clear P1e00 and P0afa codes, I saw it on the forum of https://www.gm-volt.com, it may be useful.
Here are the steps:
1) Go ahead and use a laptop with Windows 10 Pro on it.
2) Only needed GDS2 and VX Manager.
3) Be sure to turn off all Windows virus scanning and Windows defender settings available thru “Windows Security”. Check it again if you reboot because sometimes they would turn back on.
4) If VX Manager does not say “Online” in bottom right, it may be your DNS settings. I guess some DNS servers have flagged vxdiag.net to be unsafe and refuse to resolve due to security concerns. lol. If need be, manually set DNS to 8.8.8.8 in adapter, IP4 config settings and reboot.
5) You do not need to be online or connected to VCX Nano to install GDS2 or VX Manager. But you do need to be online and connected to run VX Manager and install the GM GDS2/T2W driver, update nano firmware, and install licenses. Connected means plugged in to car and usb port. I think once all that has been done, you do not need to be connected to network anymore.
6) In VX Manager, there is a way to update the firmware on the nano. This will most likely need to be done when first bought. Just click the “update firmware” button.
7) In VX Manager, you may also get warning about needing to update license. Update firmware first, then the update the license.
8) Once in GDS2, follow videos to update VIN, select MDI2 interface, and get into the heart of the app.
To clear DTCs PFE00 and P0AFA, and and get car charging...
1) First, I tried to run isolation test. That ended up not helping so not sure if it was relevant.
2) When you enter main app, here is your menu. Click on “Module diagnostics” menu
3) From “Module Diagnostic” menu, click on “Hybrid/EV Powertrain Control Module 2” menu
4) Click on “Control Functions”
4) Click on “Clear Secured High Volage DTCs”
5) go to last tab “DTCs Display”. Note, my image does not have any DTCs cause I already cleared them. However, you should have the P0AFA DTC listed.
6) select the item in list and click “Reset”. Once text above “Reset” button says “reset” exit the “Clear Secured High Voltage DTCs” procedure which should put you back at procedures menu
7) go back to “Hybrid/EV Powertrain Control Module 2” menu and select “Display DTC’s”
8) Click the “Clear DTC” button. It took me to another page with list of DTCs at top and had to add the DTC to list at bottom as a way to “selecting” it.
9) Click Ok, twice. At that point my DTC was clear and car started charging.
10) I checked to see if there were any other DTCs but did not see any. I turned the car off and it is currently charging.
As a side note, I did check my cell voltages before doing any ot these steps to see where it was at. I will check back after charged to see if DTCs are actually cleared and check voltages again.