P0AC4 - OBD II Trouble Code

By Brad Kava
January 31, 2017

Our automotive experts have put together the following information about the P0AC4 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 P0AC4 code.

OBD II Fault Code

  • OBD II P0AC4

OBD-II Code Diagnostic Trouble Code is defined as a Hybrid Powertrain Control Module Requested MIL Illumination

The vehicle uses several different modules to run self-checks on the high voltage system. If a fault is found by any of the modules, code P0AC4 will be set. Additional codes may be stored in other modules.

Common Problems That Trigger the P0AC4 Code

  • Further diagnostics of the hybrid system is required

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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