OBDII Code List

P0AA9 LEXUS - Hybrid Battery Voltage Isolation Sensor Circuit Low

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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P0AA9 LEXUS Possible Causes

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

First diagnose P0AA9 LEXUS code

    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 LEXUS code

    Labor: 1.0

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

P0AA9 LEXUS Possible Symptoms

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

P0aa9 Lexus Description

The power management control ECU monitors the battery smart unit and detects insulation malfunctions in the high-voltage system.
OBDII Code P0aa9 Lexus - Hybrid Battery Voltage Isolation Sensor Circuit Low -

P0AA9 LEXUS More Information

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