Hyundai IONIQ 5

P0A0D

Critical

High Voltage System Interlock Circuit High

Severity
Critical
Category
Battery
Code Type
EV-Specific
Applicable Regions
US, EU, Global

What does P0A0D mean?

Fault code P0A0D means "High Voltage System Interlock Circuit High". It is an EV/Hybrid-specific diagnostic trouble code (DTC) in the powertrain system, classified as "battery" with a severity level of "critical". This is a critical code that requires immediate attention. Stop driving as soon as safely possible and contact a qualified technician or roadside assistance. This code is defined by the SAE J2012 / ISO 15031-6 standard and applies to OBD-II compliant vehicles sold in the US, EU, and other global markets.

Possible Causes

  • Battery cell degradation or damage
  • Battery Management System (BMS) malfunction
  • Wiring harness or connector issue in high-voltage circuit
  • Software calibration error

Recommended Actions

  1. 1 Stop driving and seek immediate professional assistance
  2. 2 Have the high-voltage battery system inspected by an authorized EV technician
  3. 3 Do not attempt to service high-voltage components yourself

This is a critical fault code. Pull over safely and seek immediate professional assistance.

This code applies to all vehicles. View generic P0A0D information →