[caniggia]

Hi

Got this error after finally my bpcm got fixed.
Car runs fine. But isolation test won't run.

Maybe somebody has detailed error description

Do you know where in battery is isolation sensor? Error seems to point circuit error of this sensor

Thanks

 

[caniggia]

Update, this error is coming also from faulty bpcm, we installed another one and it's working. So now we need to compare both to see what's damaged

 

[Electric Tire Shredder]

Great that you got it working!

So this whole time it was a bad BPCM? (causing pack voltage & contactor faults, and intermittent DC-DC & PIM faults)

I suppose you're trying to do it yourself instead of using the place you posted about that repairs them:

Repair of Battery Control Unit Fiat 500e - Electric

Softelectronic performs diagnostics and repair of all types of electric cars. Battery Control Unit repair of Fiat 500e.

www.softelectronic.com

That you posted on this thread: 500e Positive Contacter fault, won't drive

 

[caniggia]

That's correct. I found local guy that is very smart and we work together, that's good lesson.
He fixed electronically my BPCM and trying to find what causes in it to make this error. Once all done, i'll write all about this
Currently looking for BPCM pinout

 

[caniggia]

Finally after fight with bpcm till 3am we found another electronic element was bad. Fixed and now car is completly errors free

 

[fiatatat]

@caniggia just to confirm - the BPCM you had to repair was in the battery pack?

 

[caniggia]

Correct

 

[Electric Tire Shredder]

@fiatatat might want to compare symptoms & error codes to the @canniggia car

If I recall correctly:

• The @canniggia car just suddenly died completely & ALL of the usual tricks failed.
• The @fiatatat car was temporarily resurrected twice with a few of the usual tricks post #23 here:

Batteries & Contactors Aren't Really...

My CO flex has never done that. Once it goes to low/off it never reconnects to the car. Wonder if it is a setting. I have never had issue with it not starting to charge. I Normally pull in and leave the car on and plug in then turn the key off. To limit contactor cycles. But even if I don't do...

www.fiat500owners.com

 

[fiatatat]

Symptoms and codes are identical, and they consistenly return after resets. I'm now working with the guy from Poland to check if we can diagnose or do something about this remotely, and will go from there.

Good news is that the pack cells seem to be okay. The positive contactor is stuck on open though.

 

[caniggia]

I think you are working with guy where my car stucked for 4 months and was not fixed. Charged money agd stopped pick the phone for 2 months. I was lucky i was able to take my car and other guy fixed my bpcm in 2 weeks. I bet you have same issue as mine

 

[fiatatat]

@caniggia just sent you a PM.

 

[Electric Tire Shredder]

Symptoms and codes are identical, and they consistenly return after resets.

Please confirm that you tried every trick, in sequence, from the recently-updated post #1 here:

HOW TO FIX A "DEAD" 500E that suddenly...