[scottnlimp]

I have a 2019 I Pace. Recently had the H441 update installed, March 23, 2024. Two weeks later after charging at a public charging station over 92%, received a high voltage on the display screen. It also stated safe to drive. After placing the vehicle in drive and drove 1/4 of a mile the message went away.

 

[rcomeau]

This may be a glitch and unrelated. I once had a similar error after charging (DC fast charge at an Electrify America and it cleared in a few minutes and never returned. I am pretty sure there are a few thread here with the same thing.

 

[DanVint]

After 5 months in the service, Jaguar finally found the issue of the isolation fault. It is a 125K DKK (16,750 EUR) repair on car with 60k km.
They also replaced one of the battery cells under warranty in 10k EUR covered by Jaguar.

 

[Side effect]

Hi there, have you find out what was the problem and fix it for high voltage fault detected warning

 

[DanVint]

Yeah, see the repair bill posted.

 

[sooz415]

After the recent recall of 2019 model, the battery control module got the necessary upgrade. The next day I was hit with "High Voltage System Fault detected" error.

Jaguar concluded that it has nothing to do with the update, but they can't tell the reason. The issue only appears after charging to 100%. Anyone else experiencing this issue?

In the past, this issue was mostly reported due to battery fault or control module failure. These are relatively easy to diagnose, but this time Jaguar has no idea what is going on.

The car is out of warranty, and I have to pay "full day" diagnostic work that have no results, since their diagnostics is flawed.

I had the recall and the battery module replaced (car in shop 3 weeks) , charged three times. Final time got Charging System Fault Error plus the charger was stuck on the car, took three weeks of phone calls to dealership and absolutely no help (release cord was not found). I am so over this car. Now I have to take it in, and I will not pay to have the fault diagnosed. I would love to see a class-action lawsuit, and I am not litigious, but how can a company take action that instantly devalues the car. Any others?

 

[MarkB63]

PS : Video is under "Transmission Failure Detected" thread. Run it until you reach about 10:45 min and you will see the tech experience the "HV System Fault". He too was baffled as to the cause.

I've just started having the same issue with my ipace, the contactors break connection when you come to a stop then reconnect when you pull away - you can hear them clicking in the back of the car and sometimes I have actually loss drive momentarilly. I was looking for this video of the technicain in Ukraine - do you have the link please? Thanks

 

[Ayepace]

https://www.i-paceforum.com/threads/transmission-failure-detected.7282/#post-74458

 

[MarkB63]

Thank you Ayepace for replying, I found the video and yes this is what my car has been doing and then throwing up "high Voltage fault" on the dash. I took the car to Jaguar to be tested and they couldn't replicate the fault but did say that they had measured the EV High voltage battery isolation at 370 kOhms. Apparently the car will register a High Isolation fault if it drops to 233 kOhms. They are saying that there is a potential High Isolation fault in the EV High Voltage battery (sealed unit) which they say might be covered under warranty but only if it is the actual battery cells - cost to open the the EV High voltage battery and replace any items not under warranty could be as high as £13,000.
Strangely when I collected my car it now no longer "brakes the contactors" when stopping, drives and charges normally! Clearly I will not be spending £13000 to find a fault that has disappeared but now that I know I have a low isolation reading of 370 kOhms within the EV High voltage battery I am unsure if I should sell the car or just hope it never becomes a problem - car was registered Oct 2018 so nearly 7 years old! Any advice please

 

[candal.gabriel]

Hello Guys, Same problem HVS fault detected. The car workiing perfect, but it wont charge, it says error.

 

[MarkB63]

It won’t charge whilst there is a high voltage fault - try leaving the car for a few hours or even a day, then try charging on your home charger! Not ideal but it might get your car charged up enough so that you can get it to a EV workshop

 

[candal.gabriel]

It won’t charge whilst there is a high voltage fault - try leaving the car for a few hours or even a day, then try charging on your home charger! Not ideal but it might get your car charged up enough so that you can get it to a EV workshop

Thanks. I have still 76% do it is enough to get to jag service. I cross my fingers thst will be not expensive to fix.