P0B3EHybrid/EV Battery Voltage Sense A Circuit 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
- P0B3E sets when cell voltage channel A reads above any value a healthy lithium-ion cell reaches, so the reading is treated as a sensing fault. GM sets it in the battery energy control module when cell voltage A is 4.8 V or more for 1.4 s within a 2 s window, Type A, one trip. FCA uses the code on the 2021 Jeep Wrangler 4xe as Voltage Sense 1 Circuit High and on the 2019 Ram 1500 eTorque as Voltage Sense A Circuit High; in both cases a battery pack control module update removes a false MIL. A truly overcharged cell sets separate cell voltage high codes such as P0DE7 instead. Low, range and open faults are P0B3D, P0B3C and P0B3B. The car limits battery use.
- What you may notice
- MIL on, possibly without noticeable drivability change
- Electric drive or start-stop disabled
- Charging limited
- Likely causes
- LikelyBattery pack control module software causing a false MIL (FCA)
- PossibleOpen sense line letting the input float high
- RareMeasurement input of the cell monitoring chip failed
- 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: €50 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.