Error codes

[_smokemachine]

My friend just opened an EV shop near our area and during my free time, I usually go there and help him diagnose any car issues. To cut the story short, a customer brought in a 2017 500e that wasn't starting or charging. The battery showed 0% even though it was almost full the day before. The customer tried to fix it themselves, but they couldn't. We checked the car and found a loose wire. We fixed it, and the car worked for a while, but then it broke again. I checked the car again and found a problem with the battery control module. I tried to fix it, but I couldn't. I think the battery control module might be broken. I'm trying to figure out what's wrong with the car, and I'm not sure what it is.

I tried scanning the codes and saw these errors pop up:

P1E25 - "Hybrid/EV Battery Failure Level 2"
P0A1F - "Battery Energy Control Module Internal Performance"
B23B0 - "BCPM Fault"

Anyone here could help us?

 

[False_Dragon]

I found this link before and glad I saved it. You can review and see if any of the errors you have can be found here: https://docs.google.com/document/d/1za4vdym2kt1Ybf8WQXBYF6AhSrSoBE_lw14OHO1_P74

 

[_smokemachine]

I found this link before and glad I saved it. You can review and see if any of the errors you have can be found here: https://docs.google.com/document/d/1za4vdym2kt1Ybf8WQXBYF6AhSrSoBE_lw14OHO1_P74

Thanks, but I can't get any info from the battery module. No cell voltages, no pack voltage, nothing. It's all blank.

Also, about that code, the U1200 one was for the battery module, not the inverter module. Seems like they're not talking to each other.