Hybrid/EV Battery Voltage System Isolation Fault

Check these first

• Damage to the battery pack or its connections
• Corrosion or water in the battery compartment
• A failed battery management system or sensor
• A short within the hybrid system

What to do next

1. Read battery isolation resistance on a scan tool
2. Inspect the battery pack and connections for damage
3. Check the battery compartment for water
4. Test the battery management system
5. Repair the short if isolation resistance is low
6. Clear the code and retest

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