P0B14Hybrid/EV Battery Pack Voltage Sense B 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
- SAE J2012 reserves up to four pack voltage measurements, A to D; voltage sense B is the second one. P0B14 is its general circuit code: the battery controller sees an electrical fault on this input, typically an open or implausible raw signal. Which tap a manufacturer calls B is not standardised. No manufacturer documents P0B14 publicly. For the comparable channel A GM checks pack-side voltage against fixed limits and against the sum of cell voltages (P0ABB to P0ABD). CARB requires battery voltage sensors of hybrid storage systems to be monitored like any input component. Range, low, high and erratic faults have their own codes, P0B15 to P0B18. The system usually limits or blocks high-voltage operation.
- 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 or its fuse open inside the pack
- PossibleSense connector at the battery controller 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.