Engine-Codes - Generic - P0AAA

P0AAA - Hybrid Battery Voltage Isolation Sensor Circuit High

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P0AAA Possible Causes

  • Hybrid battery junction block
  • Faulty Battery Smart Unit
  • Faulty HV Battery
  • Inverter With Converter Assembly

How is the P0AAA code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the P0AAA code

Labor: 1.0

The cost to diagnose the P0AAA code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
How much do you know about cars?

Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge

Play Now

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0AAA Meaning

The power management control ECU monitors the battery smart unit and detects insulation malfunctions in the high-voltage system.

More Information

Need more information on how to fix the P0AAA code?
Get Access to Factory Service Manuals

Information for specific makes

  • P0AAA BUICK Hybrid/EV Battery Voltage Isolation Sensing Circuit 1 High Voltage
  • P0AAA CADILLAC Hybrid/EV Battery Voltage Isolation Sensing Circuit 1 High Voltage
  • P0AAA CHEVROLET Hybrid/EV Battery Voltage Isolation Sensing Circuit 1 High Voltage
  • P0AAA GMC Hybrid/EV Battery Voltage Isolation Sensing Circuit 1 High Voltage
  • P0AAA LEXUS Hybrid Battery Voltage Isolation Sensor Circuit High
  • P0AAA NISSAN Hybrid Battery Voltage Isolation Sensor Circuit High
  • P0AAA TOYOTA Hybrid Battery Voltage Isolation Sensor Circuit High

Need more help?

Get the P0aaa code diagnosed by a professional: Find a repair shop in your area