Engine-Codes - Mercury - U3000 MERCURY

U3000 MERCURY - Control Module Failure Or Erratic

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

U3000 MERCURY Possible Causes

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

How is the U3000 MERCURY 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.

Tech Notes

  • U3000:42 (Control Module: General Memory Failure) - This Diagnostic Trouble Code (DTC) sets if the Power Steering Control Module (PSCM) detects an internal memory data error during the data plausibility check.
  • U3000:46 (Control Module: Calibration/Parameter Memory Failure) - This DTC sets if the PSCM detects an internal calibration data error during the data plausibility check.
  • U3000:49 (Control Module: Internal Electronic Failure) - If at any time during normal operation the PSCM detects an internal hardware error, DTC U3000:49 is set.
  • U3000:4B (Control Module: Over Temperature) - This DTC sets if the PSCM detects an internal over-temperature condition. Steering assist is reduced to protect the Electric Power-Assisted Steering (EPAS) electronics. Steering assist returns to the normal operating level when the system has cooled down.
  • U3000:53 (Control Module: Deactivated) - This DTC sets if the PSCM detects an internal error which causes a permanent de-activation which is not recoverable with an ignition cycle.
  • U3000:56 (Control Module: Invalid/Incomplete Configuration) - This DTC sets if the PSCM detects a mismatch of data structure in the non-volatile memory.
  • U3000:96 (Control Module: Component Internal Failure) - This DTC sets if a fault causes the EPAS to enter a failure mode.
  • What is the cost to diagnose the U3000 MERCURY code

    Labor: 1.0

    The cost to diagnose the U3000 MERCURY 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.
    How much do you know about cars?

    Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge

    Play Now

    Possible Symptoms

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

    U3000 MERCURY 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. The Diagnostic Trouble Code (DTC) will set when the PSCM detects a Control Module Failure Or Erratic.

    More Information

    Need more information on how to fix the U3000 MERCURY code?
    Get Access to Factory Service Manuals

    Need more help?

    Get the U3000 Mercury code diagnosed by a professional: Find a repair shop in your area