P0A80 but all voltages look normal?

Your safety disconnect is probably not installed correctly. The only time I've ever seen the MFD SOC display act like that was when a safety disconnect was installed but not fully interlocked. (that last push downward to actually seat the electrical connectors for the interlock)

 

Re-reading your post...when you initially press the power button to start the car, does the engine ever start to perform a warm up cycle? Have you ever done any work to the HV battery?

You definitely have an unusual problem. All your individual indications are that the HV battery could be fine, but the SOC display on the MFD makes no sense. Just thinking out loud but I wonder if theres a connector issue in the HV battery electronics or an ECU problem.

 

are you testing them under load?

 

yes.

 

the delta between modules.

 

contact jeff for advice.

 

Block 7 most likely is causing the P0A80. You might be able to rejuvenate the weaker of the two modules in that block with the Prolong system which will save you a lot of work otherwise. Hope you are successful with the Prolong.

 

Soooooo.....we're saying that at idle, with the voltage only fluctuating a few tenths of a volt, that a bad module in block 7 is causing the MFD SOC indication to fluctuate from full green bars to no bars? But no P3017 code?

I'm not saying block 7 is not an issue. All I'm saying is that I've seen a couple batteries with failed modules and I haven't seen that MFD variation.

 

Seeing as no-one actually answered this question, and recognising it is a bit late, but better late than never, what you are looking for, are modules that discharge faster under load than its peers and (usually) the same modules charge faster under charge than its peers. These are the best signs of modules that are out of step and render the battery towards failure.

If you replace these modules, as a cheap quick (but short-term fix), you will still need a method to charge and discharge each module. You can do this using a (or several) RC charger(s) on individual modules (cheap, but more time consuming, effort and inconvenience) or you can charge the HV battery as a whole using a grid charger/discharger (more expensive, quicker, more convenient). Many here use the HA Prolong system to do this.

Looking back at you screenshots, your IR values all show 0 (as well as IR14 missing, will need to manually add to PIDs), which is incorrect and I suspect there is an error in each formula in the PID. @ericbecky uses that software and I know he is happy to take calls, so a call to him can probably sort you out. I mention this as IR is a reasonable indicator of the state of health of each module. New modules usually start in the 0.018-0.019 Ω range, but as they become more used they get above 0.030 Ω.

Hope you find some of that useful.

 

It's @jeff652, and he's just been tagged.

 

The 0.0 IR should just be the result of the resolution selected. Typical values would be like a 0.025, so it rounds to 0.0

The display can be adjusted to show the actual value.