P0A7FWysoki
Pogorszenie sprawności baterii HV — niska SOH
Układ napędowy
Sprawdź szczegóły →P0AC4
WysokiHV Battery Cell Voltage Difference — Too Large
OBD-II (EN): HV Battery Cell Voltage Imbalance
Code P0AC4 indicates too large a voltage difference between HV battery cells. It signifies uneven module degradation. Requires balancing or replacement of the weakest module.
Symptoms
Power limitation, rapid SOC drops, HV battery warning light, unstable range
Possible causes
Damaged/worn individual cell, uneven module aging, faulty BMS (balancing not working), cell voltage sensor problem
Affected systems
Related codes
P0AA6Wysoki
Napięcie baterii HV — niestabilne
Układ napędowy
Sprawdź szczegóły →P3000Wysoki
System baterii HV — kod nadrzędny
Układ napędowy
Sprawdź szczegóły →Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Tags and synonyms
Does code P0AC4 require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.