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Discussion Starter · #1 ·
Hi Guys,
I hope any of you can give me a hint, what could be the reason behind of the issue.
I have Q210 43kW Zoe, and I can not charge it on 3 phase chargers. I tried it on 2 days, 4 different 22kW chargers and I am getting "Battery charging impossible" message after 1-2 sec of charge. I have read that, it could be an grounding issue, but I don't believe that. Because I tried it on 4 different charges where I was able to charge previously.
I have checked the ground resistance value in the CanZE app, and it shows 0 ohm. Beside of this I have checked the DTC-s and in the BCB-OBC category I have found some. Unfortunately I did not write it down but those were "Neutral current sensor" related. Tomorrow morning I will check them again.

Any of you has any idea what could be the problem? How can I identify it and move further?
Thank you so much!
 

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What age is your car? Try measuring the resistance between L1 and L2, and L1 and L3. If one is close to open circuit then you have an issue with the BCB.
 

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Hi, can you charge on a single phase charger successfully, e.g. granny cable or home charge point?

The resistance/continuity test is best done between L3 and N on the Zoe's charge point - if its charging single phase it connects N and L3 since the live phase wires feed the charger and so if charging on single phase it feeds Neutral in via L3, however if there is a misconfigured 3 phase charge point it can cause the car to believe it is single phase when it is actually 3 phase and the car's relay gets welded shut and N and L3 are then permanently connected together, which prevents charging on 3-phase.

It is not easy to fix, needs a new charging unit (left hand part of the BCB - top metal box under the bonnet).

Cheers.
 

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There are specialists in the UK that can replace the damaged relays if this is the issue, and no doubt likewise in Hungary if that's where the car is.
For details on how it's all put together watch this video from @mikeselectricstuff

 

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Co-author of CanZE. Q210 nov 2013
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I doubt it's the stuck welded L3-N relay. If so it would blow every 3 phase chargepoint out of order.
 

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Discussion Starter · #6 ·
Thank you for the answers

What age is your car? Try measuring the resistance between L1 and L2, and L1 and L3. If one is close to open circuit then you have an issue with the BCB.
It is a 2015.06. one. I measured the resistances and it is showing approx 10k ohm between L1-L2, L1-L3 and as I am measuring it is continuously increasing. The resistance between the L1-N, L2-N, L3-N is almost infinity, or not measureable by my multimeters 2000k limit. Multimeter just blinks for a short and than says infinity.


Hi, can you charge on a single phase charger successfully, e.g. granny cable or home charge point?

The resistance/continuity test is best done between L3 and N on the Zoe's charge point - if its charging single phase it connects N and L3 since the live phase wires feed the charger and so if charging on single phase it feeds Neutral in via L3, however if there is a misconfigured 3 phase charge point it can cause the car to believe it is single phase when it is actually 3 phase and the car's relay gets welded shut and N and L3 are then permanently connected together, which prevents charging on 3-phase.

It is not easy to fix, needs a new charging unit (left hand part of the BCB - top metal box under the bonnet).

Cheers.
I have tried it with my granny charger, and it is saying "Check charging post" or something similar. I have taken some screenshots from canze, while the granny charger is plugged in.
140587


140588
 

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Co-author of CanZE. Q210 nov 2013
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The increasing "resistance" car side is totally normal. That's the 100 uF filter capacitors slowly charging by the measurement current.
 

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Discussion Starter · #8 ·
The increasing "resistance" car side is totally normal. That's the 100 uF filter capacitors slowly charging by the measurement current.
It can be a good sign. I hope so.
Do you have any idea what else worth to check?
 

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The neutral current sensor out of range I believe you will always get since the reading is currently zero and it classes that as out of range. i.e. that will show unless it is charging and isnt actually an issue. The most interesting thing from your screenshot is the ground resistance showing 0.0, Zoe's are very fussy about earth resistance and I doubt that 0.0 is the real figure. It is interesting because from the other figures we can see the charger was connected at that point.

Have you given the contacts in the charge point a good clean, ideally with some contact cleaner? It may just be a poor connection. If you want to investigate further after that i'd advise a good fault code reader - i have the icarsoft RT one, it is good.

Cheers.
 

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Discussion Starter · #10 ·
The neutral current sensor out of range I believe you will always get since the reading is currently zero and it classes that as out of range. i.e. that will show unless it is charging and isnt actually an issue. The most interesting thing from your screenshot is the ground resistance showing 0.0, Zoe's are very fussy about earth resistance and I doubt that 0.0 is the real figure. It is interesting because from the other figures we can see the charger was connected at that point.

Have you given the contacts in the charge point a good clean, ideally with some contact cleaner? It may just be a poor connection. If you want to investigate further after that i'd advise a good fault code reader - i have the icarsoft RT one, it is good.

Cheers.
I did not spray anything, but tomorrow I will give a try, thanks for the advice.

Beside of this I did an "All data" export of the BCB-OCB via CanZE. I can not fully interpret what is this, but probably someone has more knowledge or, it would be great to compare it with someone else export if possible. I am seeing few neurtal/ground related entry in it.

2021-02-07_21h24_18.png


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I have attached the whole table if anyone interested and can see something
 

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Co-author of CanZE. Q210 nov 2013
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@G.a.r.y .
  • but the explicit errorcode is that the N sensor value is too high?
  • The ground resistance being 0 is something I do see, depending on how the chargepoint is wired. Here the grid is T-N-CS, which means N and PE are basically connected at the street cable tap. Extremely low values are not rare. With a ground pin, nah.
  • I assume you've run the icarsoft on the ZOE and it gives more useful info than CanZE? If that's so I need to get my fingers on one, sniff what it's doing. Hmmm.

@chege54 sorry I don't have more hints. At this moment I would be inclined to give up and find a good dealership or specialist.
 

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Hello, my Zoe 2013 shows also charging not possible with many DTC, one of these was the current sensor, i have replace the charger with a new one, really new. Now i don´t have the dtc with the sensor etc. bit one DTC P0440 with isolation from high voltage, if i try to load the zoe i have in canze also 0 Ohm. can try somebody on a ok zoe how much ohm you see in canze, 0 also before charging and more than 0 after charging ? and maybe somebody have a instruction for coding the new charger.
 

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And chege, if my car works you can have the left side of my old charger... i have the left side from the charger here, this is ok, because your car load with 1 phase, then is the relais the problem on the filter. my car doenst load with 1 or 3 phase , here is the black box the problem.
 

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Discussion Starter · #14 ·
And chege, if my car works you can have the left side of my old charger... i have the left side from the charger here, this is ok, because your car load with 1 phase, then is the relais the problem on the filter. my car doenst load with 1 or 3 phase , here is the black box the problem.
Mine did not charge neither on 1 or 3 phases. On 3 phase I am getting Battery charger impossible, and on 1 phase I am getting check charging post error.

Probably we have the same issue?

I did not catch you fully, so did you replace the whole charging unit (BCB) and still not charge?
 

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Yes i have a whole new charger, and it doesnt charge, renault said its nessersary to go into the workshop for a adaption because the new one is naked with software. Iam sure if you buy a whole charge from a old car it works. Normally you need only the black box, but i think is naked also, and then it dont work, only after visit the renault dealer. I have swap only the board inside the black box but thats damaged. here a photos etc from me in the german forum Zoe lädt nicht mehr :-( - ZOE - Laden, Ladeequipment • Renault ZOE - Elektroauto Forum (goingelectric.de)


and a video also
 

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Discussion Starter · #16 ·
Yes i have a whole new charger, and it doesnt charge, renault said its nessersary to go into the workshop for a adaption because the new one is naked with software. Iam sure if you buy a whole charge from a old car it works. Normally you need only the black box, but i think is naked also, and then it dont work, only after visit the renault dealer. I have swap only the board inside the black box but thats damaged. here a photos etc from me in the german forum Zoe lädt nicht mehr :-( - ZOE - Laden, Ladeequipment • Renault ZOE - Elektroauto Forum (goingelectric.de)


and a video also
Thank you, unfortunately my German is not so good, but I will go through on it.

Where did you buy your black box?
Did you see anything on the boards, after opening it, or was the problem measurable anyhow?
 

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No i have buy the whole charger, you can buy all parts by renault, only the Black box or the other parts inside the charger, you can translate the Website with New edge Explorer, on the right side on the top of the Explorer. I will let you know if my car charge again, now we have to much Snow for transport the car to the dealer
 

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Discussion Starter · #18 ·
No i have buy the whole charger, you can buy all parts by renault, only the Black box or the other parts inside the charger, you can translate the Website with New edge Explorer, on the right side on the top of the Explorer. I will let you know if my car charge again, now we have to much Snow for transport the car to the dealer
Thank you so much! Keep in touch :)
 

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Myself and my eletric go worker dont See anything on the Board, Take a Look to YouTube there is a great Video
 

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Discussion Starter · #20 ·
Myself and my eletric go worker dont See anything on the Board, Take a Look to YouTube there is a great Video
In this video, the guy said: they are seeing the mains in the diagnostic. But for me when the charger is connected it is showing 0V

Do you remember, did you see voltages or not?
So I am getting confused what could be the problem. Mine is not charging on any number of phases but I am not seeing any voltages. But the current is over the threshold... How could be that
140663
 
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