It's that pesky 12V battery yet again...

Faults and Technical chat for the Nissan Ariya
karltk1
Posts: 313
Joined: Wed Oct 05, 2022 7:14 pm

Post by karltk1 »

Cosmyc wrote: Thu May 23, 2024 12:37 am I can look those fault codes on the service manual for you, maybe I could identify something in common.

In READY position the car always charges the 12V battery with variable voltage and current as needed, if the DC-DC intelligent management fails it will work on safe-mode on which it charges the battery permanently with 14V during normal driving, like a traditional alternator.

In OFF position (or also called deep sleep) the charging algorithm is designed to top up always the 12V battery every 24 hours since last drive session for 10 minutes on LHD Ariya's and 7 minutes for RHD, as long as there is at least 12% or more charge on the high voltage battery and the hood is closed, this top up is a fixed time, independent of 12V battery voltage.

When the car is in the ON position (not Auto ACC, OFF or READY) the car checks continuously the 12V battery consumption and voltage, and if needed it will start the DC-DC converter indefinitely as long as the user wants the car to be in the ON position, turning on the climate control will always trigger this inmediately, as the car is programmed to never use 12V battery with the climate turned on.

Also the car checks every 4 hours the 12V battery voltage looking for "emergency charge need" when seeing it below 11V or so, this emergency charge lasts 2 hours and then the function rests for 1 hour and repeats this process if the condition persists.

I will leave here some diagrams and info for you, in case you find it helpful.

System Description.pdfSystem Description2.pdfSystem Description3.pdfSystem Description4.pdfSystem Description5.pdf
Hi. Sorry for the delay, completely forgot about the codes.

Here are what I have managed to find that I can't get any data for.

P1B20 (87). Had quite a few of these.

U2144 (86)

U1D141(61)

The rest I can identify ok.

Thanks.

Cosmyc
Posts: 294
Joined: Fri Jul 08, 2022 6:08 am

Post by Cosmyc »

P1B20 (87) is CAN communication problems with CPLC (quick charging control signal converter). Additional troubleshooting is available.

U2144 (86) is CAN communication problems with LBC (traction battery controller). Additional troubleshooting is available.

U1D141(61) this one has an extra digit before the parenthesis which is wrong, error codes must be 5 digits, probably misplaced.
karltk1
Posts: 313
Joined: Wed Oct 05, 2022 7:14 pm

Post by karltk1 »

Thanks for this, will check code again. So Comms problems with charging and the traction battery! Interesting.
andriy
Posts: 5
Joined: Wed Jun 19, 2024 5:03 pm

Post by andriy »

Cosmyc wrote: Mon Jun 10, 2024 12:43 am P1B20 (87) is CAN communication problems with CPLC (quick charging control signal converter). Additional troubleshooting is available.

U2144 (86) is CAN communication problems with LBC (traction battery controller). Additional troubleshooting is available.

U1D141(61) this one has an extra digit before the parenthesis which is wrong, error codes must be 5 digits, probably misplaced.
I got this error P1b20 relay 4 control ouput line in SCW or OC, but my Ariya drives fine, but it does not charge on fast charging, but it charges well on slow charging, what could be the problem and how to solve it?
andriy
Posts: 5
Joined: Wed Jun 19, 2024 5:03 pm

Post by andriy »

karltk1 wrote: Mon Jun 10, 2024 5:22 pm Thanks for this, will check code again. So Comms problems with charging and the traction battery! Interesting.
solved the problem?
Cosmyc
Posts: 294
Joined: Fri Jul 08, 2022 6:08 am

Post by Cosmyc »

andriy wrote: Wed Jun 19, 2024 5:08 pm
Cosmyc wrote: Mon Jun 10, 2024 12:43 am P1B20 (87) is CAN communication problems with CPLC (quick charging control signal converter). Additional troubleshooting is available.

U2144 (86) is CAN communication problems with LBC (traction battery controller). Additional troubleshooting is available.

U1D141(61) this one has an extra digit before the parenthesis which is wrong, error codes must be 5 digits, probably misplaced.
I got this error P1b20 relay 4 control ouput line in SCW or OC, but my Ariya drives fine, but it does not charge on fast charging, but it charges well on slow charging, what could be the problem and how to solve it?
That error code is incomplete, it should be P1B20-11 (shorted circuit on relay 4), P1B20-15 (open circuit on relay 4) or P1B20-87 (CAN communication problem with CPLC which controls relay 4).

On the first two errors the battery of the car has to be disassembled and several electrical connection checks have to be done, if any check fails replace that specific part that fails, if everything is good then replace the junction box which is inside high voltage battery.

On the third error several CAN communication checks has to be done following a flowchart, if any check fails replace that specific part that fails, if everything is good then CAN communication lines are good and the CPLC unit has to be replaced, which is inside the dash.
andriy
Posts: 5
Joined: Wed Jun 19, 2024 5:03 pm

Post by andriy »

Cosmyc wrote: Wed Jun 19, 2024 7:11 pm
andriy wrote: Wed Jun 19, 2024 5:08 pm
Cosmyc wrote: Mon Jun 10, 2024 12:43 am P1B20 (87) is CAN communication problems with CPLC (quick charging control signal converter). Additional troubleshooting is available.

U2144 (86) is CAN communication problems with LBC (traction battery controller). Additional troubleshooting is available.

U1D141(61) this one has an extra digit before the parenthesis which is wrong, error codes must be 5 digits, probably misplaced.
I got this error P1b20 relay 4 control ouput line in SCW or OC, but my Ariya drives fine, but it does not charge on fast charging, but it charges well on slow charging, what could be the problem and how to solve it?
That error code is incomplete, it should be P1B20-11 (shorted circuit on relay 4), P1B20-15 (open circuit on relay 4) or P1B20-87 (CAN communication problem with CPLC which controls relay 4).

On the first two errors the battery of the car has to be disassembled and several electrical connection checks have to be done, if any check fails replace that specific part that fails, if everything is good then replace the junction box which is inside high voltage battery.

On the third error several CAN communication checks has to be done following a flowchart, if any check fails replace that specific part that fails, if everything is good then CAN communication lines are good and the CPLC unit has to be replaced, which is inside the dash.
could you give me your mobile number so that I can call you and we will discuss this problem on my ariya because I don't have these cars serviced in Ukraine and I have a big problem with this, send me your mobile number to my e-mail avarlamov8283@gmail. com I will be grateful to you
andriy
Posts: 5
Joined: Wed Jun 19, 2024 5:03 pm

Post by andriy »

Cosmyc wrote: Wed Jun 19, 2024 7:11 pm
andriy wrote: Wed Jun 19, 2024 5:08 pm
Cosmyc wrote: Mon Jun 10, 2024 12:43 am P1B20 (87) is CAN communication problems with CPLC (quick charging control signal converter). Additional troubleshooting is available.

U2144 (86) is CAN communication problems with LBC (traction battery controller). Additional troubleshooting is available.

U1D141(61) this one has an extra digit before the parenthesis which is wrong, error codes must be 5 digits, probably misplaced.
I got this error P1b20 relay 4 control ouput line in SCW or OC, but my Ariya drives fine, but it does not charge on fast charging, but it charges well on slow charging, what could be the problem and how to solve it?
That error code is incomplete, it should be P1B20-11 (shorted circuit on relay 4), P1B20-15 (open circuit on relay 4) or P1B20-87 (CAN communication problem with CPLC which controls relay 4).

On the first two errors the battery of the car has to be disassembled and several electrical connection checks have to be done, if any check fails replace that specific part that fails, if everything is good then replace the junction box which is inside high voltage battery.

On the third error several CAN communication checks has to be done following a flowchart, if any check fails replace that specific part that fails, if everything is good then CAN communication lines are good and the CPLC unit has to be replaced, which is inside the dash.
can you at least have a diagram or a photo of exactly where you need to call and where the relay on the battery is located?
Cosmyc
Posts: 294
Joined: Fri Jul 08, 2022 6:08 am

Post by Cosmyc »

Diagrams are slightly different depending if you have a 63kWh or 87kWh Ariya, which one dou you have?

Regarding the relay, after following the procedure for disassembling the battery you have to check if the pressure sensor harness connection is good.

Next is checking continuity between junction box harness connector (LB11) and vehicle communication harness connector (LB2) as follows: S15 with 5, S17 with 18, S21 with 25 and S22 with 15, also check for short to ground and short to lines.

Next is checking continuity between junction box (LB11) and LBC harness connector (LB18) on S20 with 46, also check for short to ground and short to lines.

If all this is good then the junction box needs to be replaced, which contains the high voltage battery current sensor.
andriy
Posts: 5
Joined: Wed Jun 19, 2024 5:03 pm

Post by andriy »

Cosmyc wrote: Fri Jul 05, 2024 6:13 pm Diagrams are slightly different depending if you have a 63kWh or 87kWh Ariya, which one dou you have?

Regarding the relay, after following the procedure for disassembling the battery you have to check if the pressure sensor harness connection is good.

Next is checking continuity between junction box harness connector (LB11) and vehicle communication harness connector (LB2) as follows: S15 with 5, S17 with 18, S21 with 25 and S22 with 15, also check for short to ground and short to lines.

Next is checking continuity between junction box (LB11) and LBC harness connector (LB18) on S20 with 46, also check for short to ground and short to lines.

If all this is good then the junction box needs to be replaced, which contains the high voltage battery current sensor.
87kWh
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