Engine-Codes - Toyota - P0AA9 TOYOTA

P0AA9 TOYOTA - Hybrid Battery Voltage Isolation Sensor Circuit Low

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?

P0AA9 TOYOTA Possible Causes

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

How do I fix code P0AA9 TOYOTA

Check 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.

Cost of diagnosing the P0AA9 TOYOTA code

Labor: 1.0

The cost of diagnosing the P0AA9 TOYOTA 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.

Possible Symptoms

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

P0AA9 TOYOTA Meaning

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

P0AA9 TOYOTA More Information

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