P2BE4Hybrid/EV Battery Pack Current Sensor C 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
- P2BE4 is the general circuit code for a third current measurement in the high-voltage battery, used where sensor A (P0ABF to P0AC3) and sensor B (P0B0E to P0B13) are already taken. What C measures depends on the design: a further Hall or shunt channel, or a sensor in a second current path; Continental patents a battery busbar with three independent current devices whose values are compared. No manufacturer documents P2BE4 publicly. GM's generic check for sensor A shows the method: before precharge the reading is stored as zero, and if it then moves by less than 1 A once loads draw current, the sensor is judged stuck. CARB requires circuit checks for hybrid inputs. Loss of a current value limits power; bus loss of sensor C is U064C.
- What you may notice
- Hybrid or EV system warning
- Reduced electric power or range
- MIL on
- Likely causes
- LikelyCurrent sensor C defective
- PossibleWiring or connector fault between sensor and battery controller
- RareInput stage or software of the battery controller
- 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: €150 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.