P0A0CHigh Voltage System Interlock Circuit Low
The HV interlock signal is below threshold, indicating broken loop or short to ground. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
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
Aún no hay un anunciante en este espacio.
Possible Causes
The components or conditions that trigger this code
- 1Interlock loop broken Connector pins corroded - high contact resistance Harness chafing through insulation
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Difficulty: shop_only. Estimated time: 1-5 hours. Estimated cost: €200-€
- 2Professional repair recommended
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
Dig Deeper
Videos, images and service manuals
Have Another Code?
Look it up directly: