P0B96Hybrid/EV Battery Voltage Sense S Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0B96 is a plausibility code: the voltage of sense S looks electrically valid but fails to track the rest of the pack. GM's eAssist mild hybrid requires cell S to move at least half as much as the other cells once the average changes by more than 0.045 V, judged over 20 of 40 samples at 200 ms, Type B. The 16OBDG02 programme accepts a trend of 0.002 V and sets Type A after 35 of 40 evaluations, while the 2019 hybrid processor wants 0.005 V. On the 2012 two-mode trucks S is block 19, and the check scales blocks 19 and 20 by twenty and compares them with the pack voltage, with more than 70 V deviation in 160 of 170 samples leading to Type B. Circuit, low and high faults of S are excluded first.
- What you may notice
- MIL with little or no change in driving
- Electric assist reduced at times
- Likely causes
- LikelyMeasuring channel S frozen or lagging behind the other cells
- PossibleBattery controller calibration requiring a software update
- RareBlock 19 or 20 out of step with the pack on two-mode NiMH batteries
- 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: €80 – €5,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.