A charging connection must be recognised and managed before useful energy transfer can occur. A car that detects a cable has not necessarily completed every step required to charge.
How to narrow it down
Record the sequence from plugging in to the error, including vehicle and charger messages. Compare the supported charging mode and any diagnostic logs. This helps separate an early communication problem from a later power-conversion or battery-system issue.
What to include with the fault report
Send the charger type, vehicle details and the exact point at which progress stops.
Avoid forcing charging through modified cables or signal devices. Protective checks are part of the charging process.
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 Texas Instruments. The referenced design explains the principle; the vehicle-specific procedure determines the repair.
Related reading — Proximity and control-pilot information should not be treated as the same signal. Browse all vehicle-electronics diagnostic notes or return to the repair library.