P0AA6 on RAM
Hybrid Battery Voltage System Isolation Fault
P0AA6 on RAM vehicles indicates hybrid battery voltage system isolation fault. Au7o has documented this code across 1 RAM model — most commonly on 1500. 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. Typical repair costs on RAM range from $800 to $2,000, depending on the specific model and root cause.
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 RAM by Model
RAM 1500(1 issue)
- eTorque Mild Hybrid System Failure2019-2025
The 2019+ RAM 1500 with eTorque mild hybrid system (standard on V6, optional on V8) experiences failures of the 48-volt battery pack, belt-driven motor generator (BDM), and eTorque control module. Symptoms include rough idle, stalling at stops, auto start-stop not working, and "Service eTorque System" warning messages. The 48V lithium-ion battery pack located under the rear seat deteriorates over time, especially in hot climates. TSB 08-074-20 REV.A addresses eTorque motor generator unit noise and vibration. Replacement of the 48V battery pack costs $800-1,500 and the BDM unit runs $1,200-2,000.
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View P0AA6 across all makes →Frequently Asked Questions
What does P0AA6 mean on RAM?▼
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 RAM specifically, this code is documented across 1 model.
What causes P0AA6 on RAM vehicles?▼
Common causes on RAM: 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 RAM?▼
Repair costs on RAM range from $800 to $2,000, depending on the specific model and root cause.
Which RAM models have P0AA6 documented?▼
Au7o has documented P0AA6 on 1 RAM model: 1500.