P0B26Hybrid/EV Battery A Voltage High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0B26 means the voltage of hybrid/EV battery A is above the permitted value. Bentley documents it in the 48 V Dynamic Ride system of the Continental GT and Flying Spur, stored in address 0021 with symptom code 28672; the prescribed repair is replacing the super capacitor. On the Bentayga it appeared with P16C5, traced to a broken solder joint inside the capacitor; on the Bentayga and Flying Spur Hybrid it shows up in the high-voltage battery manager 008C beside P0B25, with MIL and red HV warning. GM monitors the analogous pack overvoltage with P0ABD (above 479 V, Type A). Typical reasons are a failing energy store, an overcharged cell group or a measuring fault. Low and unstable readings are P0B25 and P0B24. Charging and recuperation are limited.
- What you may notice
- Bentley Dynamic Ride fault warning, roll control inactive
- MIL on
- Hybrid/EV system or high-voltage battery warning on
- Charging or recuperation restricted
- Likely causes
- LikelyFailing energy store, e.g. Bentley 48 V super capacitor
- PossibleCell group charged too high, balancing not effective
- RareVoltage measurement fault in the controller or sense leads
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €300 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.