P0A08High Voltage Battery Isolation Fault
A current leak was detected between the high-voltage system and the vehicle body.
This code also has a manufacturer-specific definition:
Can I keep driving? NO
STOP the vehicle in a safe place. Continuing to drive may cause serious engine damage or put your safety at risk.
Sistema Afectado
Sistema Híbrido / EV · Batería HV y motor eléctrico
Pertenece al sistema de alto voltaje: batería de tracción, inversor o motor eléctrico.
Espacio para vendedores de repuestos
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Symptoms You Will Notice
What you may observe when this code appears
- Isolation fault light
- Possible electric shock
- Safety system active
Possible Causes
The components or conditions that trigger this code
- 1HV cable insulation damage
- 2Moisture in HV connector
- 3Short to ground in the HV electrical system
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Do NOT touch high-voltage cables without protection
- 2Take it immediately to an authorized EV shop
Note: This information is for general reference. For precise diagnostics and safety repairs, always consult a certified mechanic.
Estimated Cost
Approximate range in USD (varies by region and shop)
HV electric system
* Diagnosis only: $50–$150
Quick Info
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