P0D85 means the charger is putting more voltage onto the traction battery side than it should. In Ford's 2019 plug-in hybrid OBD summary the battery controller compares the charger's output voltage with its own request and flags a surplus of 20.82 V lasting 20 seconds. Mitsubishi's 2022 Outlander PHEV judges a change of output voltage of more than 450 V while the PHEV-ECU allows charging, stops the charge and points to the charger/DC-DC unit after checking the high-voltage fuse and the P/N lines; the 2023 list lights the hybrid warning and the MIL. Porsche reuses P0D8500 on 911 (992) petrol models for a battery voltage judged too high at cold start, fixed by DME software (TI 203/23). Related: P0D20, P0D21 and the sensor code P0D4F.
High severity. Can I keep driving?If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.
Symptoms
- Charging stops
- Hybrid system warning and check engine light
Most likely causes
- Voltage control fault inside the on-board charger/DC-DC unit
- Open high-voltage fuse or P/N line between charger and battery (output unloaded)
- Control unit software error (e.g. Porsche DME, reprogramming)
What to check, in order
Start with the simplest. You can tick off each step.
What each character of P0D85 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- D: Subsystem depends on the code range
- 85: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0D85?
If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.
What causes code P0D85?
The most common causes are: voltage control fault inside the on-board charger/DC-DC unit; open high-voltage fuse or P/N line between charger and battery (output unloaded); control unit software error (e.g. Porsche DME, reprogramming).
Related codes
- P0D20Battery Charger A Output Voltage Performance
- P0D21Battery Charger A Output Voltage Too Low
- P0D4FBattery Charger Hybrid/EV Battery Output Voltage Sensor Circuit High
- P0D22Battery Charger A Output Current Performance
- P0D5CBattery Charger Hybrid/EV Battery Output Power Performance
Sources
- fordservicecontent.com: OBDSM1901 HEV
- mitsubishitechinfo.com: M154950510001600USA
- mitsubishitechinfo.com: N503230070000900USA
- static.nhtsa.gov: MC 10252523 0001
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.