OBDII Code List

P0ADC BUICK - Hybrid/EV Battery Positive Contactor Control Circuit High Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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P0ADC BUICK Possible Causes

  • Faulty Starter/Generator Control Module
  • Starter/Generator Control Module harness is open or shorted
  • Starter/Generator Control Module circuit poor electrical connection

First diagnose P0ADC BUICK 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 P0ADC BUICK code

    Labor: 1.0

    The cost of diagnosing the P0ADC 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.

P0ADC BUICK Possible Symptoms

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

P0adc Buick Description

The hybrid battery system voltage is controlled by two high voltage contactors. The high voltage contactors allow the high voltage DC batteries to be connected to the vehicle or safely contain the high voltage DC within the Hybrid/EV Battery Pack assembly. Of the two contactors, one is a pre-charge contactor and the other is the primary contactor. The two contactors are closed in a specific sequence by the Starter/Generator Control Module. The pre-charge contactor is closed first. This causes high voltage to flow through the pre-charge resistor, allowing system voltage to build slowly. Once the system voltage has raised and stabilized, the primary contactor is closed. Both contactors are controlled by the Starter/Generator Control Module. The Starter/Generator Control Module supplies B+ to each contactor at all times. When the contactors are to be closed, the Starter/Generator Control Module will provide a ground to the contactor through a low side driver.
OBDII Code P0adc Buick - Hybrid/EV Battery Positive Contactor Control Circuit High Voltage -

P0ADC BUICK More Information

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