What are the common causes of P0B16?

Low hybrid battery pack voltage. A failing voltage sense B sensor. Corrosion or damage on the voltage sense B wiring. A weak hybrid battery pack. A short to ground in the sense B circuit.

Measure hybrid battery pack voltage with a multimeter. Read voltage sense B on live data. Inspect the sense B wiring and connector for corrosion. Test the sense B circuit for a short to ground. Replace the voltage sense B sensor if the reading stays low. Clear the code and retest.

P0B16

Hybrid/EV Battery Pack Voltage Sense B Circuit Low

System: Powertrain control (P code)
Lamp: Check Engine Light
Category: Powertrain - Hybrid Propulsion

What it means

P0B16 means Hybrid/EV Battery Pack Voltage Sense B Circuit Low.

Check these first

Low hybrid battery pack voltage
A failing voltage sense B sensor
Corrosion or damage on the voltage sense B wiring
A weak hybrid battery pack
A short to ground in the sense B circuit

What to do next

Measure hybrid battery pack voltage with a multimeter
Read voltage sense B on live data
Inspect the sense B wiring and connector for corrosion
Test the sense B circuit for a short to ground
Replace the voltage sense B sensor if the reading stays low
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.