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P0AA1 BUICK

P0AA1 BUICK - Hybrid/EV Battery Positive Contactor Circuit Stuck Closed

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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P0AA1 BUICK Possible Causes

  • Faulty Battery Energy Control Module
  • Battery Energy Control Module harness is open or shorted
  • Battery Energy Control Module circuit poor electrical connection

How do I fix code P0AA1 BUICK

    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 P0AA1 BUICK code

    Labor: 1.0

    The cost of diagnosing the P0AA1 BUICK 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.

P0AA1 BUICK Possible Symptoms

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

P0aa1 Buick Description

The hybrid/EV battery contains 5 high voltage contactors and 2 transistors. The high voltage contactors and transistors allow the high voltage DC batteries to be connected to the vehicle or safely contain the high voltage DC within the hybrid/EV battery assembly. The 5 high voltage contactors consist of a main positive high voltage contactor, main negative high voltage contactor, charge positive high voltage contactor, charge negative high voltage contactor and multi-function high voltage contactor. The 2 transistors consist of the precharge transistor and heater transistor. The contactors and transistors close and open in a specific sequence controlled by the hybrid/EV powertrain control module 2. The hybrid/EV powertrain control module 2 supplies voltage to the control circuit for the high voltage contactors/transistors. Ground is provided through the case ground.
OBDII Code P0aa1 Buick - Hybrid/EV Battery Positive Contactor Circuit Stuck Closed - AutoCodes.com

P0AA1 BUICK More Information

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