sujeeva
Posts: 2
Joined: Mon Dec 24, 2018 8:57 pm
Delivery Date: 25 Dec 2018
Location: Colombo
Contact: Website Facebook Skype

Onboard charger capacitors failed

Sun Feb 24, 2019 9:15 am

ZEO 2012. Car on and go to driving mode. But cannot charge using AC charger or DC charger.
DTCs P3173, B2631 Sunload sensor, B2840 On board charger
Cleared errors. plugged AC charger. The car recognized the charger and started to charge. But fail after 5 seconds from the time when the AC charger plugged in.
Scan the car to get B2840 962E and P317 00C0. I did that several times, but it got the same result.
Some times, P3173 cannot clear. Several times, sometimes it gets cleared.

Tried DC Fast Charger. It went all charging sequences. But the charger did not got current request messages to inject current. So, the fast DC charger stopped working.
After that, the car showed errors B2840 962E , P317 00C0 and B29C1 9428. Tried several times, but failed.

Then disconnect the onboard charger of the vehicle and opened covers. Noticed that there are two burnt capacitors. No other burning signs.
Repairing of the onboard charger has not been guided b manufacturer, but decided to replace the burnt capacitors since the cost of even a used onboard charger is costly.
1. Has any done this before?
2. What could have caused this?
3. Will the replacement of Capacitors be successful?
GoEV
Sri Lanka

Oilpan4
Posts: 1814
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: Onboard charger capacitors failed

Sun Feb 24, 2019 9:32 am

I would start with the capacitors.
I'm assuming they are polarized electrolytics.
Got any numbers for the voltage and microfarads?
"THE ABOVE POST CONTAINS MISLEADING AND INACCURATE INFORMATION. PLEASE CONSIDER IT OPINION, NOT FACT". -someone who I offended and is unable to produce the facts in question.

sujeeva
Posts: 2
Joined: Mon Dec 24, 2018 8:57 pm
Delivery Date: 25 Dec 2018
Location: Colombo
Contact: Website Facebook Skype

Re: Onboard charger capacitors failed

Mon Feb 25, 2019 7:33 pm

Oilpan4 wrote:I would start with the capacitors.
I'm assuming they are polarized electrolytics.
Got any numbers for the voltage and microfarads?
Thanks!
They are non Polarize capacitors. One is 1.0uF 275V LE105 and other is 3.3uF 275V LE335
My order will arrive on Friday, any further opinion?
GoEV
Sri Lanka

Oilpan4
Posts: 1814
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: Onboard charger capacitors failed

Tue Feb 26, 2019 8:38 am

Hopefully that does it.
"THE ABOVE POST CONTAINS MISLEADING AND INACCURATE INFORMATION. PLEASE CONSIDER IT OPINION, NOT FACT". -someone who I offended and is unable to produce the facts in question.

Relaxe
Posts: 1
Joined: Wed Aug 14, 2019 6:21 am
Delivery Date: 10 Aug 2019
Leaf Number: 019832

Re: Onboard charger capacitors failed

Wed Aug 14, 2019 6:49 am

Any update? I'm really interested to know if it worked!

RustyCOQ
Posts: 1
Joined: Fri Aug 30, 2019 3:46 pm
Delivery Date: 30 Aug 2019

Re: Onboard charger capacitors failed

Fri Aug 30, 2019 4:22 pm

I am also interested in your solution! I opened up my charger and found one very badly burnt.. capacitor? it is so burnt that I can't even tell what it is. I am interested to see if you have pictures? I am trying to find out the part number of the component so that I can order one to replace it.

Charger Model is
296A0 3NA5A

Component that is burnt is the large block component next to the filter inductor on the bottom board.

goldbrick
Posts: 1151
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Onboard charger capacitors failed

Fri Aug 30, 2019 8:49 pm

Just FYI, there are lots of types of capacitors and I wouldn't be surprised if this is one that is not readily available 'off the shelf'. You might want to try to source a new PCBA from someone parting out a Leaf of the same year as yours. While a capacitor may seem like a simple device they are not, especially for high voltage and/or high power applications.

nlspace
Posts: 301
Joined: Mon Jun 05, 2017 10:21 pm
Delivery Date: 06 Jun 2017

Re: Onboard charger capacitors failed

Sun Sep 15, 2019 6:28 pm

Here is a datasheet for the AC input filter safety capacitors that the OP mentioned.

Image

@Rusty, we need to see a picture to know which ones you are referring, there are several inductors in the OBC.

NiallDarwin
Posts: 49
Joined: Thu Jul 09, 2015 1:58 am
Delivery Date: 12 Dec 2015
Leaf Number: 004321
Location: New Zealand

Re: Onboard charger capacitors failed

Sun Aug 02, 2020 3:32 pm

This is great info except for the lack of follow up! Have any of you with this problem tried to repair their chargers? What was the result? Negative answers are at least as useful as positive :)

wxmatt
Posts: 20
Joined: Sun Sep 27, 2020 3:34 pm
Delivery Date: 14 Nov 2014
Leaf Number: 023861

Re: Onboard charger capacitors failed

Mon Sep 28, 2020 6:30 am

I am also having the exact same two error codes that do not clear:

B2840 962E CHARGER On Board Charger
P3173 00C0 EV/HEV On Board Charger Sys

My 2012 Leaf with 88k miles throws a fault on the trickle charger and will not charge on it or our L2 First Gen JuiceBox. When I plug it in, it beeps once for the proximity, but no lights illuminate, and the OBC does not make any noise.

The car will still drive, but I am rationing those miles to drive a little every few days so that the car doesn’t sit static indefinitely. We live in Mississippi and the nearest Nissan dealer won’t touch it, and our nearest Leaf dealer hasn’t ever seen anything like this, and is well out of range, even if it had a full charge. The amber EV Warning light on the dash is illuminated, and if I’m being embarrassingly honest, has been for months, but I was too cheap to buy Leaf Spy Pro for my unactivated Android phone until recently.

As I rack my brain for anything that could be related: the charge cord has ran under our garage door for years, and while we have kept a block next to it to keep the door from crushing it, I wonder if it’s related. Originally, I could get the amber EV warning light to go away by plugging it into the Nissan L1 trickle charger, But it eventually would come back after L2 charging. A few months back, after I plugged it in with the L2 charger, I wiggled the cord and it stopped charging and then started again. I don’t believe it’s happened more than once, but remains possible it’s related.

Again, now neither my L2 charger nor the L1 charger that came with the car originally will get more than a proximity beep when plugged into the LEAF.

I am used to working on my ICE vehicles, and feel like the service manuals give me enough information to change out the charger if necessary. My biggest concern is that 400 V is significant, and I have to convince my wife to let me work on it. While I would like to believe that my issues are related to the “diode“ issues others have talked about, it seems like there are more layers to these codes, which might actually necessitate replacing or at least removing the whole charger.
2012 LEAF (White) - Purchased in 11/14
2010 Rogue (Black)
1987 BMW 325i (Red)

Return to “Problems / Troubleshooting”