P2c85 - Hybrid EV Battery Voltage External Isolation Fault

[majerus]

Last night poking around forscan and found this. Is this a huge concern? I know on other EVs an isolation fault is a huge deal. I also have issuse for ABS , air dam and other things.. Ill just drop them in here and see what you guys have to say. Thanks!

Main issue:

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[majerus]

No warning lights are on the truck just found in Forscan..

 

[majerus]

Random camera ones....

 

[bmwhitetx]

There are others more experienced here, but for the ones that say "Previously Set DTC - Not Present at time of Request", I generally ignore, especially the ones that start with U (communication error).

The camera ones could also be a temp glitch in the IPMA. The air dam one is also somewhat common. I would clear them and see if they come back.

The first one is interesting and intermittant. Did you do a Google search for that specific code?

 

[Heliian]

Meh, no lights, no problem!

 

[majerus]

There are others more experienced here, but for the ones that say "Previously Set DTC - Not Present at time of Request", I generally ignore, especially the ones that start with U (communication error).

The camera ones could also be a temp glitch in the IPMA. The air dam one is also somewhat common. I would clear them and see if they come back.

The first one is interesting and intermittant. Did you do a Google search for that specific code?

Yea not much came back from that one, a few folks had a battery fail but that was it. Looked like it was paired with other codes as well in those situations.

 

[chl]

Reminds me of all the alerts etc one can view in Windows Administrative Tools Event Logs - PC works fine despite a bunch of logged warnings etc.

 

[majerus]

Reminds me of all the alerts etc one can view in Windows Administrative Tools Event Logs - PC works fine despite a bunch of logged warnings etc.

When the errors are information I agree, when they are Error or Warning your suppose to react to those events..

 

[chl]

When the errors are information I agree, when they are Error or Warning your suppose to react to those events..

Yes, well, sometimes it can be a matter of too much information.
Are they serious problems or just software glitches that can be ignored?

I have seen "Warnings" when I look deep enough into the logs of my PC's Administrative Tools data ever since I first got a Windows PC many, many years ago. However, nonetheless, my PCs have operated without obvious serious errors for many years despite the "Warnings."

So I chalk it up to an imperfect operating system of millions of lines of code (which Windows is) and ignore them.

I used to work at Bell Labs in a system software group in the 1980's documenting new releases so I know a little bit about how programmers work and how their work turns out. Many times, variables targets that are checked will change as the system software evolves, but the testing value is overlooked unless overlooking it would cause a program stop functional error. Even after release, the end users may see insignificant errors if they dig into the admin logs, and they may have been told to ignore them, or change a particular setting or variable, etc.

Windows software for example may be/will be run on hardware with widely different configurations, processors, I/O devices, etc., than the software was developed on, and that can result in internal error and warning messages, which can be ignored unless they cause the PC to stop working. This has been an ongoing issue with Windows since it's inception and distribution. It's messy. Mostly the issues are 3rd party programs, but now and then, MS releases an update that bricks a number of PCs.

Now, I am not saying that is what is going on when Forscan data shows some potential issue, but maybe it is. Everybody talks about how buggy the Ford software is.

Personally, software bugs was/were one of my concerns when buying the Lightning. We have to put our faith in Ford that there is nothing so bad in the programming that out lives or limbs or property is in danger. Another was the battery technology and manufacturing quality control. I had zero issues with my 2012 Nissan Leaf, but when I looked at the Lightning forums before buying, there were plenty of issues to ponder.

So, we know there will be 'bugs' in the Lightning operating system and that they may be corrected with CSPs or OTA updates, and maybe even improvements will be implemented.

If while operating my truck, it gave me a warning message in the user interface, that's one thing.

But if the information is only available for me to see by scanning through the hidden data with Forscan, unless I was an expert on the Lightning software, I wouldn't be able to judge the severity or know if, or how, I should react.

I assume there are people on these forums who use Forscan who know what things mean.
But sometimes, they come up empty.

In that way it is similar to my experience with PC operating systems.

 

[cowboys1870]

Last night poking around forscan and found this. Is this a huge concern? I know on other EVs an isolation fault is a huge deal. I also have issuse for ABS , air dam and other things.. Ill just drop them in here and see what you guys have to say. Thanks!

Main issue:

I have the same fault. Did this ever become an issue for you?

 

[chl]

I would take the "Intermittent" "Malfunction Indicator Lamp is Off" and "test not complete" as meaning this is probably ignore-able.

Sometimes in testing programs, the test is run before some prerequisite has been set, resulting in a temporary indication of a fault. So rather than rewrite the whole routine, the program will have to wait and run the test later or several times to see if the fault indication repeats, and indicate a the "test not complete" status - if the fault does not persist, it will be labeled as 'intermittent' and no drastic action needs to be taken, i.e., escalating it to effect a warning indication lamp.

Just basing this on my experience with programmers when I worked in the systems software group at Bell Labs in the 1980's, and my experiences with the various Windows OS over the years.

But, maybe someone knows more about this and I am wrong?

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