P0B24 Hybrid Battery "A" Voltage Unstable

[vacasity]

Well this just sucks.
I left for an extended weekend vacation, left the truck at 49% SOC. Arrived home and try to go out for a drive but the truck was throwing me all kinds of bad news, decreased power, service asap. I only had 4% available power.
After using a code reader I somehow ended up with P0B24, which is,

OBD-II Code High voltage system may not operate is defined as a Hybrid Battery "A" Voltage Unstable
The high voltage battery is composed of many individual battery cells. The Battery Energy Control Module (BECM) monitors all the cells in the high voltage battery pack to make sure they are all contributing equally to the high voltage system. If one cell is determined to be unequally contributing, code P0B24 will be set.

It looks like I'm pretty hosed as I disconnected the 12v battery and all codes re-appeared. My ODB II reader is showing me SOC 47.91, HVB 348.5, (isn't this supposed to be over 400?)

Nothing else for me to do tonight, will call dealer in the morning and looks like i'll have to get a tow to the dealership if nothing magically changes overnight.

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[vacasity]

Here are a couple pics. I’ll have to take pics of the dash tomorrow.

 

[astricklin]

There's several other threads for the power train malfunction/reduced power

 

[Heliian]

Have you tried plugging it in?

Have you had any previous errors or codes?

 

[Adventureboy]

Looks like your pack definitely has a problem. Your Charge Power limit is 5Kw which is pretty low.

What OBD-II code reader did you use for that? Lots of interesting info on that page. I'd like to see what the Charge Power Limit parameter says when I'm plugged into a 350Kw DC charger and only getting 33Kw!

 

[Pioneer74]

Looks like your pack definitely has a problem. Your Charge Power limit is 5Kw which is pretty low.

What OBD-II code reader did you use for that? Lots of interesting info on that page. I'd like to see what the Charge Power Limit parameter says when I'm plugged into a 350Kw DC charger and only getting 33Kw!

33Kw sounds like the cable isn’t being cooled or the temperature sensor for it is bad.

 

[Maquis]

Looks like your pack definitely has a problem. Your Charge Power limit is 5Kw which is pretty low.

What OBD-II code reader did you use for that? Lots of interesting info on that page. I'd like to see what the Charge Power Limit parameter says when I'm plugged into a 350Kw DC charger and only getting 33Kw!

If that’s at an EA charger, 33 KW is the magic number when the cable is bad. As Pioneer stated, either overheated or (more likely) failed temp sensor.

 

[Adventureboy]

If that’s at an EA charger, 33 KW is the magic number when the cable is bad. As Pioneer stated, either overheated or (more likely) failed temp sensor.

It was an Electrify Canada charger so probably the same as the EA chargers. I think I will need to get set up with a service call.

 

[Maquis]

It was an Electrify Canada charger so probably the same as the EA chargers. I think I will need to get set up with a service call.

As stated, that KW limit is often a charger problem, not the vehicle. It might just be coincidence.

 

[Adventureboy]

Thanks for the clarification. I read it as a problem with a cable or temperature sensor on the truck so I'm a bit relieved.

 

[vacasity]

Looks like your pack definitely has a problem. Your Charge Power limit is 5Kw which is pretty low.

What OBD-II code reader did you use for that? Lots of interesting info on that page. I'd like to see what the Charge Power Limit parameter says when I'm plugged into a 350Kw DC charger and only getting 33Kw!

I have an ODBLink MX Wifi edition and using the Car Scanner app, recommended from Kyle Conner. It was actually the first time using it so I don't have a baseline to compare it to.

 

[vacasity]

Update...Officially not the dealer doesn't know what's wrong yet. They are suspecting a battery module has failed and expecting to pull the battery tray and diagnose.
While the Truck is in the shop, they are performing the 20k mile inspection, updating the Air Dam modules and updating the module for cabin pre-conditioning.

 

[Adventureboy]

Update...Officially not the dealer doesn't know what's wrong yet. They are suspecting a battery module has failed and expecting to pull the battery tray and diagnose.
While the Truck is in the shop, they are performing the 20k mile inspection, updating the Air Dam modules and updating the module for cabin pre-conditioning.

Did they tell you why they are updating the Air Dam module? I have a vibration at highway speeds that seems to be related to airflow and I suspect it is the louvers in the lower grill. I'm wondering if the update is to solve something like that.

 

[vacasity]

Did they tell you why they are updating the Air Dam module? I have a vibration at highway speeds that seems to be related to airflow and I suspect it is the louvers in the lower grill. I'm wondering if the update is to solve something like that.

I told them that the Air Dam is still giving me issues since the last time I had it in. The service manager said there is an update for that and well see if that fixes it.

 

[vacasity]

Got an update from ford as they pulled the battery and 1 of the battery modules needs to be replaced. We are currently on a 4+ day wait for the new module.
Hopefully that's all it is.
They gave me a 2023 F150 XLT Hybrid Ecoboost with the V6. as the truck is nice, i don't like paying for gas anymore. Didn't realize how much i was saving with the Lightning.

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