On supported CCS systems, digital communication forms part of establishing the charging session. A failure before energy transfer can therefore require a communication investigation as well as electrical checks.

What to check next

Compare the vehicle message with the charger session record and note whether the problem repeats at another compatible unit. A technician should identify the stage that failed before assuming a battery or inlet replacement is required.

Useful information for an enquiry

Send the charger operator, unit reference, time of attempt and exact error message.

The charging station and vehicle both take part in the session. One failed attempt does not establish which side caused the interruption.

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 — An EV charging session can fail at protocol negotiation. Browse all vehicle-electronics diagnostic notes or return to the repair library.