P0ADB - OBD II Trouble Code

January 31, 2017

Our automotive experts have put together the following information about the P0ADB diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0ADB code.

OBD II Fault Code

  • OBD II P0ADB

OBD-II Code High voltage system may not operate is defined as a Hybrid Battery Positive Contactor Control Circuit Low

The High Voltage System is engaged and disengaged through the Hybrid Control Module. If the Hybrid Control Module cannot control the circuit to the high voltage battery, code P0ADB will set.The Hybrid Control Module may disable the high voltage system.

High voltage system may not operate Symptoms

  • High voltage system may not operate
  • Vehicle will not charge

Common Problems That Trigger the P0ADB Code

  • Auxiliary 12V battery failure
  • High voltage control module failure
  • Wiring issue

About the Author

Brad Kava is an automotive expert at RepairPal, the leading online source of auto repair resources and estimates. With many ASE Master certified mechanics on staff who have decades of experience, RepairPal knows all the fine points of car repair.

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