HV battery fault

Mick Evans

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Rayleigh Essex
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Last night I used a fast charger on the M25. Only charged for 15 minutes then got HV fault. Locked the car and returned 20 minutes later all good. I've seen some post where they say disconnect the battery.
Is it worth carrying a small jump starter?
TIA
 
Do you mean a rapid charger? you don't normally get that error on a fast charger.
It's common to get it if you charge past 95% on a rapid (CCS) charger and usually leaving the car off for ten minutes will clear it. Disconnecting the 12v battery can speed it up.
 
Do you mean a rapid charger? you don't normally get that error on a fast charger.
It's common to get it if you charge past 95% on a rapid (CCS) charger and usually leaving the car off for ten minutes will clear it. Disconnecting the 12v battery can speed it up.
Yes rapid charger charged from 17% to 46%

A jump starter is only needed when the 12V battery is too low to power on the car.
For the problem you describe an OBD dongle and app to clear the error codes might be more useful.
After the charge HV battery showed 11%
 
Let me get that straight, it charged from 17 to 46%, then stopped with a fault and 20min later all was good but the SOC was then a merely 11%?
What car are you driving?
No I unplugged the car pressed start and then came up HV fault

Let me get that straight, it charged from 17 to 46%, then stopped with a fault and 20min later all was good but the SOC was then a merely 11%?
What car are you driving?
Mg5
 
A jump starter is only needed when the 12V battery is too low to power on the car.
For the problem you describe an OBD dongle and app to clear the error codes might be more useful.
Can you recommend an OBD dongle please.
 
Can you recommend an OBD dongle please.
There are some recommendations below
 
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