P0B1EHybrid/EV Battery Pack Voltage Sense D Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Voltage sense D is the fourth and last pack voltage measurement in the SAE J2012 scheme. P0B1E is its general circuit code: the battery controller treats this input as electrically faulty, for example open or without a usable raw signal. The assignment of D to a specific measuring point is manufacturer-specific. No manufacturer documents P0B1E publicly. GM illustrates the monitoring on channel A, comparing pack-side voltage with limits and with the summed cell voltages (P0ABB to P0ABD). CARB requires battery voltage sensors of hybrid storage systems to be monitored like other inputs. Detailed fault types of channel D are P0B1F to P0B22. High-voltage operation is usually restricted.
- What you may notice
- MIL and hybrid/EV system warning on
- Battery power limited, reduced electric drive or assist
- Vehicle may not reach Ready or may shut down the high-voltage system
- Likely causes
- LikelyVoltage sense lead D or its fuse open
- PossibleSense connector loose or corroded
- PossibleMeasurement input of the battery controller defective
- 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: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.