DC Fast Charging Not Working, Only Type 2 AC Charging

[Sebastian]

Hi everyone,

I own a 2023 MG4 Luxury (manufactured in December, 64 kWh battery, ~19,750 km) and I’m currently facing a serious issue:
DC fast charging no longer works — only AC charging via Type 2 (around 10 kW) functions correctly.

I’ve tested the car at multiple DC fast chargers from different providers, but none of them initiate charging.
No error appears on the charger or on the car — it just doesn’t connect.

A yellow warning icon (battery with a slash through it) appears on the dashboard.
Ever since this symbol showed up, DC charging has been completely blocked.

I scanned the car using Car Scanner, and here is the list of DTCs I found:

• P1FED(92) – High Voltage Battery System Fault (active)
• P1A12 – HV Battery Cooling System Fault (passive)
• U1900 – CAN Communication Fault
• U0401 – Invalid data received from ECM/PCM
• U0422 – Invalid data received from BCM
• U0131 – Lost communication with Power Steering Control Module
• U0151 – Lost communication with Restraints Control Module (RCM)
• U3000 – General Control Module Fault

Has anyone experienced something similar — especially this yellow icon combined with complete DC charging failure?
Any help or advice would be greatly appreciated!


Thanks in advance!

 

[Wudus]

When I had this fault of DC charging not working it was fixed by a software update at a dealers

 

[Martinonline]

Do you know what voltage your 12v battery has? I note that the driver's screen is showing a problem with that charging circuit.

With your car in a safe position, you could try disconnecting the 12v negative terminal for 10 minutes and then reconnect. That may reset all the modules. There is a set up procedure afterwards see the Wiki and the top of the forum.

 

[Ian Key]

As @Wudus said, your software needs updating at your dealers. Mine is under investigation at the moment because it won't charge on DC. One of the first things they did was to update several software modules relating to charging.

 

[Sebastian]

I updated to R59 and it still didn't work, but I went to the MG representative and they opened a file with the errors for me, which they sent to MG China. I'm waiting for them to call me to see what they decide.
Upon inspection, a cracked hose was discovered by the large antifreeze tank, they recommended replacing the hose, after which we'll try again to see if the DC charging starts. I'll keep you updated on what happens.