Engine-Codes - Generic - U3004

U3004 - Accessory Power Relay

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U3004 Possible Causes

  • Faulty Accessory Power Relay
  • Accessory Power Relay harness is open or shorted
  • Accessory Power Relay circuit poor electrical connection

How is the U3004 code repair?

Start by checking 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.

What is the cost to diagnose the U3004 code

Labor: 1.0

The cost to diagnose the U3004 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

U3004 Meaning

The Power Steering Control Module (PSCM) monitors various inputs and outputs of the Electric Power-Assisted Steering (EPAS) system in order to keep the system operating at peak capacity. Information provided by sensors (steering torque, vehicle speed, vehicle travel distance, etc.) are all compared to programmed and learned information. Likewise, outputs like the motor and steering rack (travel) are tested against programmed and learned information. This test generates a RVC for a new PSCM when directed to do so from pinpoint test. A RVC is required to order a new PSCM and to document billing for payment.

More Information

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