P2E30Battery Charger B Module Supply Voltage Low
- Generic OBD-II code · Powertrain
- How the car detects it
- P2E30 is stored when the 12 V feed reaching the control board of charger B stays under its lower limit. Most causes lie upstream: a flat or aged 12 V battery, a blown fuse or failed relay in the charger feed, or corroded supply and ground contacts that lose voltage under load. No manufacturer documents P2E30 publicly, and no threshold is published. For a sense of scale, Holley's 30-8405 charger unit names 9–16 V as its normal range and keeps CAN alive only down to 6 V; Mitsubishi's Outlander PHEV lists a faulty charger supply circuit among the causes of lost communication with the charger (U019B). Under CARB rules a charger fault that blocks charging must be flagged. Too high is P2E31, charger A low is P2E2D. Charging via path B is likely refused; driving normally continues.
- What you may notice
- Charging through charger B does not start
- Low-voltage or communication faults in other modules too
- Reduced charging power if only one charger works
- Likely causes
- LikelyDischarged or aged 12 V battery
- PossibleBlown fuse or failed relay in the charger B feed
- PossibleVoltage drop across corroded supply or ground contacts
- RareDC/DC converter not holding up the 12 V network
- Repair
- Medium · Often possible to do yourself.Typical cost: €20 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.