Compatible charging hardware still needs a successful exchange between vehicle and charger software. A negotiation failure can stop the session before a useful charging-current diagnosis is possible.
How to narrow it down
Preserve both sides’ error messages and the session timestamp. Check supported software updates and known vehicle or charger guidance through the relevant providers. If the fault is repeatable, a specialist can use the protocol-stage evidence to narrow the investigation.
What to include with the fault report
Include whether AC charging works and whether the problem affects one or several DC chargers.
Do not label every early charging failure as a defective on-board charger. The architecture and failed stage must be identified first.
Speak to AXION
For EV and hybrid diagnostic assessment, send your vehicle details and fault report. Workshop assessment is in Didcot, Oxfordshire. Suitable postal or remote work is confirmed before booking.
Technical background from Vector. The referenced design explains the principle; the vehicle-specific procedure determines the repair.
Related reading — Vehicle and charging-station logs should use a matching timestamp. Browse all vehicle-electronics diagnostic notes or return to the repair library.