P0AA6
Hybrid/EV Battery Voltage System Isolation Fault
P0AA6 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Voltage System Isolation Fault. Common causes: damage to the insulation of high-voltage cables, problems with high voltage battery. Estimated repair cost: $167–1111.
Symptoms
- Check Engine light comes on
- High voltage system fault warning appears
- Reduced vehicle performance
- The car may go into emergency mode
- Possible charging problems (for PHEV/EV)
Causes
- Damage to the insulation of high-voltage cables
- Problems with high voltage battery
- Damage or contamination of high voltage components
- Insulation monitoring system malfunction
- High Voltage System Grounding Problems
How to Fix
- Conduct diagnostics of the high-voltage system using special equipment
- Check the insulation integrity of all high voltage components
- Inspect the high-voltage battery for damage
- Check the operation of the insulation monitoring system
- Repair only from an authorized dealer
Related codes
Error P0AA6 by Vehicle Brand
FAQ
What does the P0AA6 code mean?
P0AA6 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Voltage System Isolation Fault
What causes a P0AA6 error code?
The most common causes of P0AA6 include: Damage to the insulation of high-voltage cables; Problems with high voltage battery; Damage or contamination of high voltage components; Insulation monitoring system malfunction.
How do I fix a P0AA6 diagnostic trouble code?
To fix P0AA6: Conduct diagnostics of the high-voltage system using special equipment. Check the insulation integrity of all high voltage components. Inspect the high-voltage battery for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0AA6?
Do not drive — repair immediately
How much does it cost to fix P0AA6?
The estimated repair cost for P0AA6 is $167–1111. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat