HV Battery Pack Capacity Degradation Severe
2012-2017 Buick Regal 2.4L I4 Hybrid
Description
The BMS has determined that the HV battery pack capacity has degraded to a level significantly below the original specification.
Symptoms
- Greatly reduced electric range
- Battery SOC swings rapidly
- Frequent transitions to ICE (hybrid)
- Range anxiety warnings frequent
- Battery health indicator very low
- Charge completes much faster than normal
Common Causes
- Natural cell aging
- Extreme temperature exposure history
- Frequent DC fast charging
- Deep discharge cycles
- Manufacturing batch variability
Diagnostic Steps
- Read battery state of health percentage
- Review battery capacity test results
- Check degradation rate trend data
- Compare actual range to spec
- Review charging and usage history
Repair Notes
Battery pack replacement is the only remedy for severe capacity degradation. Check if battery is within warranty coverage.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P3207 on Other Vehicles
Common Questions
What does code P3207 mean on a 2012-2017 Buick Regal?
P3207 stands for "HV Battery Pack Capacity Degradation Severe". The BMS has determined that the HV battery pack capacity has degraded to a level significantly below the original specification.
What are the symptoms of P3207 on a Buick Regal?
Common symptoms of P3207 include: Greatly reduced electric range, Battery SOC swings rapidly, Frequent transitions to ICE (hybrid), Range anxiety warnings frequent, Battery health indicator very low, Charge completes much faster than normal.
What causes P3207 on a 2012-2017 Buick Regal?
Common causes of P3207 include: Natural cell aging, Extreme temperature exposure history, Frequent DC fast charging, Deep discharge cycles, Manufacturing batch variability.