U057BInvalid Data Received From Battery Charger Control Module C
- Generic OBD-II code · Network
- How the car detects it
- Charger C is the third on-board charger slot. Some vehicles split AC charging over several units: the extended-range Ford F-150 Lightning, for example, offers 19.2 kW through a dual on-board charger. A Porsche patent describes such a group, in which only one charger is wired to the inlet and acts as master while the others are linked to it only by a communication line. U057B means data from charger C reach the network but fail the checks, so the master or charging controller cannot share the load with it. No manufacturer documents U057B or names a third charger publicly. U027A is total loss of contact. The usual result is reduced AC charging power; driving is unaffected.
- What you may notice
- AC charging slower than expected
- Charging fault message in the display or app
- Likely causes
- LikelyCharger C internally faulty
- PossibleCharger C on a different software level than master or charging controller
- RareCommunication line between the chargers damaged
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.