P0AA6

What does P0AA6 mean?

Fault code P0AA6 means "Hybrid Battery Voltage System Isolation Fault". 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. [Nissan EV-specific: High Voltage System Isolation Fault (Ground Leak). Applies to: Nissan LEAF (2010+), Nissan LEAF e+ (2019+)] [BMW EV-specific: High Voltage System Isolation Fault. Applies to: BMW i4 (2022+), BMW iX1 (2022+), BMW iX3 (2020+), BMW i5 (2023+), BMW iX (2021+)] [General Motors EV-specific: High Voltage System Isolation Fault (Ultium). Applies to: Chevrolet Equinox EV (2024+), Chevrolet Blazer EV (2024+), Honda Prologue (2024+), Cadillac Lyriq (2023+), Chevrolet Silverado EV (2024+)] [Ford EV-specific: High Voltage System Isolation Fault. Applies to: Ford F-150 Lightning (2022+), Ford Mustang Mach-E (2021+), Ford E-Transit (2022+)] [Audi EV-specific: High Voltage System Isolation Fault. Applies to: Audi Q6 e-tron (2024+), Audi SQ6 e-tron (2024+), Porsche Macan EV (2024+), Audi Q4 e-tron (2021+), Audi Q4 Sportback e-tron (2021+)]

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