P0E85Battery Charger B Temperature Too High
- Generic OBD-II code · Powertrain
- How the car detects it
- P0E85 reports that the second charger stage or second on-board charger, labelled B, has become hotter than its own protection limit allows. Like the A counterpart P0D24, it is a heat verdict, not a sensor fault: the charger trusts its reading and cuts back power or stops to save its semiconductors. No manufacturer documents P0E85 with set conditions in public sources. Toyota shows that the letter B is real hardware: the 6.6 kW charger of the RAV4 Prime logs its input current fault as charger B (P0E89). CARB asks plug-in hybrids to flag charger failures that stop charging or reduce its rate. Typical triggers are poor coolant flow or air flow, a clogged heat exchanger or an internal defect. Expect slow or aborted AC charging, not loss of drive.
- What you may notice
- AC charging slows down noticeably or stops before the battery is full
- Charging fault message or flashing charge-port indicator
- Likely causes
- LikelyToo little coolant or air flow through charger B (low coolant, pump, blocked fins)
- PossibleInternal defect in the power stage of charger B
- RareLong full-power charging in very hot surroundings
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €80 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.