P3207critical severityPowertrain
HV Battery Pack Capacity Degradation Severe
on 2010 Toyota Highlander 3.3L V6 Hybrid · AWD
What this code means
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.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1