P0B16
Hybrid/EV Battery Pack Voltage Sense B Circuit Low
Generic OBD-II
Common symptoms
What you'll notice
- Check the battery pack connectors and ensure they are securely connected
- Inspect the battery pack wiring for any signs of damage or corrosion
- Test the battery pack voltage using a multimeter to determine if it is within the correct range
- Replace the hybrid/EV battery pack if it is determined to be faulty
Common causes
Most likely first
- Faulty hybrid/EV battery pack voltage sensor
- Low voltage in the hybrid/EV battery pack
- Malfunctioning hybrid/EV battery management system
- Loose or corroded connections in the circuit
- Electrical wiring issues in the hybrid/EV battery pack voltage sense B circuit
How to diagnose & fix
Work through it in order
- Reduced engine power or lack of power
- Malfunction indicator lamp (MIL) illumination
- Poor fuel efficiency
- Difficulty starting the vehicle
- Reduced vehicle performance
Read & clear P0B16 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.