U3004 - OBD II Trouble Code

January 31, 2017

Our automotive experts have put together the following information about the U3004 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 U3004 code.

OBD II Fault Code

  • OBD II U3004

OBD-II Code Accessory Power Relay is defined as a Accessory Power Relay

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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