Powertrain, generic · Vehicle speed, idle control and auxiliary inputs
P057F Battery A State of Charge Performance
Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible
P057F means the state of charge of battery A behaves implausibly or leaves its expected range – a performance code, not a circuit fault. Its documented use is on plug-in hybrids of the VW group: the 2025 Porsche Panamera E-Hybrid and Bentley Continental and Flying Spur set it in the high-voltage battery controller, which requests the warning lamp; both causes were software. CARB requires hybrids to monitor battery and charging performance. A use for a 12 V battery sensor was not found; GM and Ford do not list P057F.
Likely causes
Software of the battery controller (state of charge miscalculated)
State of charge not relearned after deep discharge, long standstill or disconnection
Battery ageing or cell imbalance
Faulty current or voltage measurement in the battery system
Symptoms
- Check engine light on
- Hybrid function restricted (less electric range or power)
- State of charge display jumping
Repair estimate
DifficultyMediumWorkshop job
Parts and labour€80–300
Time0.5–2 h
Typical range across vehicles; the real cost depends on what the testing finds.
Parts involved
high voltage batterybattery energy control moduleengine control module
Related codes
References: static.nhtsa.gov, static.nhtsa.gov, law.cornell.edu.