P0AA6 on Mazda
Hybrid Battery Voltage System Isolation Fault
P0AA6 on Mazda vehicles indicates hybrid battery voltage system isolation fault. Au7o has documented this code across 1 Mazda model — most commonly on CX-60. P0AA6 is a hybrid/EV code meaning the battery management system detected an isolation (insulation) fault between the high-voltage battery system and the vehicle's chassis ground. For safety, the high-voltage system is normally electrically isolated from the metal body; this code sets when the measured insulation resistance drops too low, suggesting current could leak to the chassis. This is treated as a serious safety concern and often disables hybrid/EV operation or limits propulsion. The vehicle should be inspected by a qualified hybrid technician, as high-voltage components can pose a shock hazard.
Common Causes of P0AA6
- •Moisture or coolant intrusion inside the high-voltage battery pack
- •Damaged or chafed insulation on high-voltage cables
- •Corrosion or water in high-voltage connectors
- •Failed or leaking battery cell/module
- •Faulty inverter, converter, or A/C compressor (high-voltage components)
- •Damaged high-voltage wiring rubbing against the chassis
- •Failed battery isolation/monitoring sensor
P0AA6 on Mazda by Model
Mazda CX-60(1 issue)
- CX-60 PHEV Insulation-Resistance Detection Can Trigger Fail-Safe No-Restart (AS007A)2022-2025
Mazda campaign AS007A covers VIN-specific CX-60 PHEV vehicles whose high-voltage control software can register an insulation-resistance fault. RDW says that if the vehicle is stopped while this condition is present, fail-safe mode can prevent the vehicle from powering on again or moving under its own power. Mazda's bulletin for the related North American application of the same AS007A repair process explains that a temporary reduction in measured insulation resistance can be misjudged as electrical leakage and may store P0AA6:00. Campaign inclusion and software are market- and VIN-specific.
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View P0AA6 across all makes →Frequently Asked Questions
What does P0AA6 mean on Mazda?▼
P0AA6 stands for "Hybrid Battery Voltage System Isolation Fault." P0AA6 is a hybrid/EV code meaning the battery management system detected an isolation (insulation) fault between the high-voltage battery system and the vehicle's chassis ground. For safety, the high-voltage system is normally electrically isolated from the metal body; this code sets when the measured insulation resistance drops too low, suggesting current could leak to the chassis. This is treated as a serious safety concern and often disables hybrid/EV operation or limits propulsion. The vehicle should be inspected by a qualified hybrid technician, as high-voltage components can pose a shock hazard. On Mazda specifically, this code is documented across 1 model.
What causes P0AA6 on Mazda vehicles?▼
Common causes on Mazda: Moisture or coolant intrusion inside the high-voltage battery pack, Damaged or chafed insulation on high-voltage cables, Corrosion or water in high-voltage connectors, Failed or leaking battery cell/module, Faulty inverter, converter, or A/C compressor (high-voltage components). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0AA6 on a Mazda?▼
Repair costs vary widely depending on the root cause and specific Mazda model.
Which Mazda models have P0AA6 documented?▼
Au7o has documented P0AA6 on 1 Mazda model: CX-60.