Powertrain Malfunction/ Reduced Power

[dancwilliams]

I got my truck back yesterday. Paperwork says they found CODE P0929 and replaced the Gear Shift Module. Now we wait....

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[Turbo_T]

Check my spreadsheet linked in my signature below and do a find for "57%" and you can see a number of reports. For some it is a bad cell in a battery module, and for others it can be a different cause. Most of these listed in the main thread for PM/RP since 2022. https://www.f150lightningforum.com/forum/threads/powertrain-malfunction-reduced-power.12873/
@powercatnewt , what is your build date shown on the drivers door sticker? miles?

oh man, if I had seen this spreadsheet before buying I would of ran for the hills. Purchased a 24 Flash 2 days ago and "Powertrain malfunction" has appeared on my dash. It doesn't appear that I have reduced power but I'm also still learning all the displays. My gear shift also does not fold down so I'm hoping it's just that?

 

[The Weatherman]

oh man, if I had seen this spreadsheet before buying I would of ran for the hills. Purchased a 24 Flash 2 days ago and "Powertrain malfunction" has appeared on my dash. It doesn't appear that I have reduced power but I'm also still learning all the displays. My gear shift also does not fold down so I'm hoping it's just that?

Chances are good it’s not a battery module. Nearly if not all that have had that failure have seen power reductions down in the 60-50% range.

 

[doublj70]

Hello, I have a 2023 XLT extended range and got this error message at just over 10k miles. The dealer replaced a bad module and I got the truck back after about 10 days. I was curios if anyone out there has had multiple module failures? Like once my one bad module has been replaced, should I be good, or can I expect more issues going forward. Also, is there a link to the spreadsheet I saw mentioned that shows all the module failures? Thanks!

 

[TaxmanHog]

Hello, I have a 2023 XLT extended range and got this error message at just over 10k miles. The dealer replaced a bad module and I got the truck back after about 10 days. I was curios if anyone out there has had multiple module failures? Like once my one bad module has been replaced, should I be good, or can I expect more issues going forward. Also, is there a link to the spreadsheet I saw mentioned that shows all the module failures? Thanks!

A few folks have had subsequent failures, hopefully they are a minority, until it happens again enjoy your Lightning.

 

[GoodSam]

got this error message at just over 10k miles. The dealer replaced a bad module and I got the truck back after about 10 days. I was curios if anyone out there has had multiple module failures?

See my signature for the link to the spreadsheet. Yes, several folks (see the Red highlighted lines) have had multiple battery module failures. What is the build date on yours? (driver's door, top of info sticker)

 

[Alexsouthcleveland]

Unfortunately looks like I might have a possible battery module failure. 2022 Lariat ER almost 60k miles. Wrench light came on Saturday Power meter stuck at 57% available. I was going to try to charge past 72% since others said there’s with the failed battery module. Now it will not charge on my home charger. Heading to a DCFC just to see. Dealer can’t look at it until Wednesday. I checked the 12 volt connections they are tight. Anything else I could try? Thank you!

 

[Alexsouthcleveland]

So I learned something from the service advisor today. According to him it just depends on which cell goes out and your locked to that charge level. Mine is 62% battery so I can charge up to that level and that’s it. One guys cell went out that was at 3% so he couldn’t go over that level. Tried DC as well. Do you think it’s hard on the rest of the pack to keep driving it?

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