U049CInvalid Data Received From Battery Charger Control Module A
- Generic OBD-II code · Network
- How the car detects it
- U049C means the on-board charger, battery charger control module A, is heard on the bus but reports values the battery controller considers invalid. Ford's 2019 OBD summary for hybrid and plug-in vehicles has the BECM set it when the charger's CAN signal shows invalid states for 5 s; U019B is the same charger missing for 5 s. Ford calls this unit SOBDM or BCCM: it turns mains AC into high-voltage DC and also feeds the 12 V battery. Ford TSB 24-2445 (2023-2024 Mustang Mach-E) finds U049C in the BECM when DC fast charging fails with an error on the charger, and cures it by reprogramming the SOBDM. Charging is refused or stops while driving stays normal; Ford flags charger faults with the amber wrench lamp.
- What you may notice
- High-voltage battery does not charge, error shown at the charging station
- Charge fault message or wrench lamp in the cluster
- Driving itself unaffected
- Likely causes
- LikelyCharger module software reporting invalid states, cured by reprogramming
- PossibleSoftware levels of charger and battery controller not matching
- RareInternal fault of the on-board charger
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €0 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.