L2 charging speed recently dropped 33%

[mkhuffman]

Mike, if that slight fluctuation of 1-2 amps at 2:30 and 2:40 is what everyone is talking about, then I guess I have it also. I was thinking it was possibly grid voltage fluctuation since it was mid afternoon and everyone is using their AC's since it was 104˚ that day. The fluctuation I have seen in some of the graphs on this thread is a very constant up and down and much much more of a difference than 1-2 amps. Would it be better if I posted that same charge session in kWh? Or is there any other test I can do like maybe from 10% SOC to 100%?

In a 80 F garage, mine takes at least 2 hours before I start seeing the throttling. Sometimes it drops a couple Amps, sometimes much more. So starting at a low SoCD will give the plug time to warm up and trigger the throttling. If it happens. I thought mine was fine when people first started reporting this problem. But I think I wasn't charging for long enough to see it.

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[markboris]

In a 80 F garage, mine takes at least 2 hours before I start seeing the throttling. Sometimes it drops a couple Amps, sometimes much more. So starting at a low SoCD will give the plug time to warm up and trigger the throttling. If it happens. I thought mine was fine when people first started reporting this problem. But I think I wasn't charging for long enough to see it.

Ok, I’ll let the battery run down to 10% then charge it fully to 100%. I’ll be going out of town Friday and when I return Monday I’ll charge it up and see what happens. My charge times have not lengthened. They seem to be the same as they were more that two years ago when I got the car.

 

[Maquis]

Yours seems to be fine.



10 Kw though is not 48 amps. When I would set the current to 44 amps it would bounce not cut off. 48 amps is 11-11.5Kw so it sounds like it is already throttled. You might be observing the 34-35 amps throttle because it's set to 48. If you leave it 40 amps I'll bet you see it bounce after ten minutes. This would indicate the same problem as I had.

There’s 10% or so losses in the onboard charger. FP shows net going into the battery. I’ve never seen over 10 KW from day 1 on 48A. With FP rounding to the nearest whole number, it hard to be very definitive.

 

[Mach-Lee]

I'm confused about this charge throttling/speed reduction. I've read where some have it and some don't. I've read it might have to do with a defective sensor in the chart port? I've read that there was an update sent out OTA which lowered the charge speeds?

Back in June on the second and fifth pages of this long thread, I posted screenshots of my charging graphs with no fluctuations nor reduction in charing speed. I was told that I possibly didn't receive the update yet. Here we are three months later and I still don't see throttling nor reduction in speed during charging. I do all my own updates with FDRS.

I charge in my garage which is temperature controlled to never go above 80˚ in the summer, below 65˚ in the winter. I have my Emporia charger set to only charge on excess solar but every once in a while I need to charge from the grid. The last time I had to do this was on the 19th of this month. Below are graphs of my 3 hr 55 min charging session. Each graph is a 40 minute period. I have my charger set to the maximum 48A and on that setting, the car always charges a solid 43 amps. I believe I was around 65% SOC when I started but don't remember. The car is set to charge to 100% so as the battery nears fully charged, the speed starts to drop which is normal but I never get a fluctuation.

09/19/23 11:35AM - 3:25PM

Only people with bad charge ports or who charge in hot ambient temps above about 85F will see throttling. Clearly your charge port is in good shape Mark, so no throttling.

The update lowered the throttling threshold from 105°C to 80°C which is disproportionately affecting people with marginal charge ports. If ambient temps are below 75°F and you see throttling, your charge port will likely have to be replaced to restore normal charging. Ford just may not know that yet.

 

[kennethjk]

Only people with bad charge ports or who charge in hot ambient temps above about 85F will see throttling. Clearly your charge port is in good shape Mark, so no throttling.

The update lowered the throttling threshold from 105°C to 80°C which is disproportionately affecting people with marginal charge ports. If ambient temps are below 75°F and you see throttling, your charge port will likely have to be replaced to restore normal charging. Ford just may not know that yet.

Been in the 50s here and charging at night, yo-yo continuing

ford has no clue or closing their eyes to the problem

because of the software I get throttling and no code- caught in a Ford loop

 

[Shayne]

The fact it was not charging at 48 amps though seems to be the clincher not really the code.

The SSM definitely helped. I have a plugin charger so I can swap easily. It no longer does 40 amp here but charges when set at 40 amp max. Appears it never hit 105C and always charged like a champ with no faults when the 12V was good. Nothing visual looks like it got too hot. My handle has always been warm but nothing that freaked me out. Of course I just tested handle temp on occasion and was not standing there holding it. Senor or actually overheated? 10C it is slow think it will be at -20?

Been in the 50s here and charging at night, yo-yo continuing

ford has no clue or closing their eyes to the problem

because of the software I get throttling and no code- caught in a Ford loop

What does yours average? %charged x 88 Kw / Time required for charging it for awhile like 20 to 80%? 25% overall reduction on 40 amp = 2+ hours longer and is noticeable after 2.5 years. It would be 33% on 48 amp as per thread title.

With @Murse-In-Airy having one that works and one that does not on the same charger same power it kind of points at the car. Always need two PC's running and now two cars? Have to try one more port in hers I think. Take it out of something working. Not often but have had 2 duds ?‍. Two original HVJB's just recently.

 

[Murse-In-Airy]

With @Murse-In-Airy having one that works and one that does not on the same charger same power it kind of points at the car. Have to try one more port in hers I think.

I agree. I’d ask for one more charge port but now the car charges instead of fails. And it throttles rather than throwing the DTC. So according to ford, I’m not entitled to try another port.

 

[Shayne]

I agree. I’d ask for one more charge port but now the car charges instead of fails. And it throttles rather than throwing the DTC. So according to ford, I’m not entitled to try another port.

Since you have the proof it is the car kind of tells you how hard they are looking for a solution. Been about 4 months since software crippled our charging. Wait and hope you can get what you paid for and after close to 3 years it is still not the case. Not talking about door button, carplay, etc. but the basics drive, charge and maintain itself. All 3 have let me down now followed by months of waiting and hoping for a fix.

If the software and really slow home charging is their fix there will be another class action as it no longer comes close to meeting spec here.

 

[kdryden99]

Since you have the proof it is the car kind of tells you how hard they are looking for a solution. Been about 4 months since software crippled our charging. Wait and hope you can get what you paid for and after close to 3 years it is still not the case. Not talking about door button, carplay, etc. but the basics drive, charge and maintain itself. All 3 have let me down now followed by months of waiting and hoping for a fix.

If the software and really slow home charging is their fix there will be another class action as it no longer comes close to meeting spec here.

What I would suggest to anybody who can see the throttling might take my before and after graphs as proof that it is not normal that is oscillating. Maybe my experience can help push for a new port.

 

[kennethjk]

What I would suggest to anybody who can see the throttling might take my before and after graphs as proof that it is not normal that is oscillating. Maybe my experience can help push for a new port.

I did that and the technician sent it to BEV team and that team sent an e mail back which I have saying it’s normal. I posted it earlier here somewhere.

no code no new part.

 

[Shayne]

What I would suggest to anybody who can see the throttling might take my before and after graphs as proof that it is not normal that is oscillating. Maybe my experience can help push for a new port.

Maybe send them this?

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@Mach-Lee

SSM 51866 2021-2023 Mustang Mach-E - Charge Status Indicator Blinking Red With DTC P0E5F Stored In The SOBDM

Some 2021-2023 Mustang Mach-E vehicles may exhibit an exterior charge status indicator blinking red with diagnostic trouble code (DTC) P0E5F stored in the secondary on-board diagnostic control module A (SOBDM) and the high voltage battery cannot be charged using a 48-amp AC level 2 charger. The vehicle may also exhibit in the next key cycle a Service Soon message in the instrument panel cluster (IPC) and a FordPass warning message. This may be due to an excessive charge port temperature. The concern may not be present when using a 32-amp or lower AC level 2 charger. To correct this condition, remove and replace the charge port. Refer to Workshop Manual (WSM) Section, 414-03B. For claiming, use causal part 14A303 and applicable labor times in Section 10 of the Service Labor Time Standards (SLTS) Manual.

----End SSM----

A faulty charge port can cause an overheat condition, P0E5F will be set when the charge port reaches 105ºC. The charge port should be replaced to fix this level of overheating. Heat is proportional to charge current, so it may only overheat at 48A charge rate, but not 32A.

NOTE: As of this writing, P0E5F (105ºC) will effectively not be set with the current SOBDM software, which limits charge port temp to 80ºC through a derating strategy. 105ºC will never be reached. A vehicle with a defective charge port will only experience a reduced charge rate, with no codes set (silent failure). Therefore I don't see this SSM being very helpful unless you are somehow still on the old SOBDM software that allowed overheat all the way to the 105ºC cutoff threshold.

Tell them I would appreciate it fixed? Appears mine now with the lasts and greatest software overheats at 40 amps. They can plug it into their Ford wall box and see that for themselves. They know the problem just not the fix. Or maybe we are seeing the fix? ?‍

I did that and the technician sent it to BEV team and that team sent an e mail back which I have saying it’s normal. I posted it earlier here somewhere.

no code no new part.

Could be faulting and not charging at all from what I hear. At least it is still charging here. They fix hardware for their news ones we get software to fix hardware it appears.

A least it reduces the chances of blowing your HVJB and having that software kick in; now it is always at home trying to charge. ?

 

[Trick.Mach-E]

BTW when I cleaned the pins (my car has 32k on it) it helped with the tiny fluctuations, they still happen, but not as much (as much of a swing from .5kW, now more like .25kW).

Out of curiosity what did you use to clean your pins? Some CRC Contact Cleaner?

 

[azerik]

Isopropyl alcohol and q tips. I believe it’s a couple pages back, Mach-Lee noted it. I still haven’t cleaned my near 100k Outdoor Focus EV’s ?

 

[nickles]

Adding an update from my end since I reported my experience with this issue on July 29th. My problems started on July 19th and lasted for about 2 months before it magically started working at the normal charge rate on Sept 10th. Notes from that timeline:

• July 19 - First noticed issue which coincided with 23-PU0314-DCM-LAT update
  • Went from roughly 6.5% charged per hour to 1.3% per hour
• August 18 - Received 23-PU0110-RAAD-PS update with no change in charge rate (expected)
• September 10 - Issue seemed to resolve itself with no intervention on my end - back to 6.5% charging per hour
• I did some DCFC in between July 19 and September 10 but not a ton
• I did a few public L2 charging sessions which seemed like normal charging rates compared to my typical charger at my apartment
• Ambient temperatures have been roughly the same throughout the period and not excessively hot by any means (Bay Area weather)
• Did not do any port cleaning or get my port replaced
• I had talked to some Tesla owners who also charge at my apartment during the time I was having my issues and they didn't notice reduced charge rates in their cars

At this point, I have no clue what caused my particular issue but I'm glad it's resolved. I hope others in this thread get some closure on theirs. Attaching my (crude) chart of my charging rates over the past 2 months based on FordPass charge logs in lieu of smart charger/OBDII logging.

 

[Shayne]

Adding an update from my end since I reported my experience with this issue on July 29th. My problems started on July 19th and lasted for about 2 months before it magically started working at the normal charge rate on Sept 10th. Notes from that timeline:

• July 19 - First noticed issue which coincided with 23-PU0314-DCM-LAT update
  • Went from roughly 6.5% charged per hour to 1.3% per hour
• August 18 - Received 23-PU0110-RAAD-PS update with no change in charge rate (expected)
• September 10 - Issue seemed to resolve itself with no intervention on my end - back to 6.5% charging per hour
• I did some DCFC in between July 19 and September 10 but not a ton
• I did a few public L2 charging sessions which seemed like normal charging rates compared to my typical charger at my apartment
• Ambient temperatures have been roughly the same throughout the period and not excessively hot by any means (Bay Area weather)
• Did not do any port cleaning or get my port replaced
• I had talked to some Tesla owners who also charge at my apartment during the time I was having my issues and they didn't notice reduced charge rates in their cars

At this point, I have no clue what caused my particular issue but I'm glad it's resolved. I hope others in this thread get some closure on theirs. Attaching my (crude) chart of my charging rates over the past 2 months based on FordPass charge logs in lieu of smart charger/OBDII logging.

Your car needed a 4 month rest so it slowed down for a bit. No transparency as to why it slowed down or why it is now charging correctly again? Hoping for your miracle fix as many of ours have been on a 4 month slow down also. No acknowledgement from Ford that there is a problem or if there will be a fix to date. Pretty awesome of them.

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