Vehicle Information
- Brand: Kia
- Model: Sorento PHEV
- Year: 2022
- Mileage: TBD
Symptoms
- Warning light after 100% full charge + 1 hour driving
DTC Code
- P1B97 – Battery Cooling Efficiency Low
Diagnosis Process
- Performed full charge to 100% via Level 2 charger
- Test drove for over 1 hour
- Modules 3 and 4 showed temperature increase
- Removed and disassembled battery pack
- Measured cooling panel temp – confirmed 36°C or above on modules 3 and 4
Root Cause
- Battery pack internal cooling module efficiency failure
Repair
- Cooling module not serviceable separately
- Replaced entire battery assembly
Result
- ✅ Resolved