Engine-Codes - Generic - P0AA9

P0AA9 Code - Hybrid Battery Voltage Isolation Sensor Circuit Low

- Code Popularity: 1,675 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the P0AA9 Code?

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

|How to Fix the P0AA9 Code?

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 P0AA9 code?

Labor: 1.0

The cost to diagnose the P0AA9 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0AA9 code possible symptoms?

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

|What Does the P0AA9 Code Mean?

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

Hybrid Battery Voltage Isolation Sensor Circuit Low

|Need more information with the P0AA9 code?

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|P0AA9 code information for specific makes

  • P0AA9 BUICK Hybrid/EV Battery Voltage Isolation Sensing Circuit 1 Low Voltage
  • P0AA9 CADILLAC Hybrid/EV Battery Voltage Isolation Sensing Circuit 1 Low Voltage
  • P0AA9 CHEVROLET Hybrid/EV Battery Voltage Isolation Sensing Circuit 1 Low Voltage
  • P0AA9 GMC Hybrid/EV Battery Voltage Isolation Sensing Circuit 1 Low Voltage
  • P0AA9 LEXUS Hybrid Battery Voltage Isolation Sensor Circuit Low
  • P0AA9 NISSAN Hybrid Battery Voltage Isolation Sensor Circuit Low
  • P0AA9 TOYOTA Hybrid Battery Voltage Isolation Sensor Circuit Low

|Need help with a P0AA9 code?

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