AutoCodes – Mercury – U045A Mercury

U045A Mercury Code - Invalid Data Received From Parking Assist Control Module 'A'

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Parking Assist Control Module 'A', Parking Assist Control Module 'A' harness is open or shorted, Parking Assist Control Module 'A' circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U045A Mercury indicates Invalid Data Received From Parking Assist Control Module 'A'.
Common causes: Common causes include Faulty Parking Assist Control Module 'A', Parking Assist Control Module 'A' harness is open or shorted, Parking Assist Control Module 'A' circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 493

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U045A Mercury Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. Some devices are constantly receiving information from other devices through serial data communication network. The invalid data Diagnostic Trouble Code (DTC) will be set when a receiving device detects a discrepancy in the information it receives from the Parking Assist Control Module 'A' causing its integrity to be questioned.

OBDII Code U045A Mercury - Invalid Data Received From Parking Assist Control Module 'A' - AutoCodes.com — U045A Mercury Code - Invalid Data Received From Parking Assist Control Module 'A'

What does this mean?

What are the Possible Causes of the DTC U045A Mercury?

Faulty Parking Assist Control Module 'A'
Parking Assist Control Module 'A' harness is open or shorted
Parking Assist Control Module 'A' circuit poor electrical connection

How to Fix the DTC U045A Mercury?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U045A Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U045A Mercury Code

1. What are common symptoms of OBDII code U045A in a Mercury vehicle?

- Common symptoms include malfunctioning parking assist system, warning lights on the dashboard, and difficulty in engaging or disengaging the parking assist feature.

2. What does the OBDII code U045A in a Mercury indicate?

- The code U045A indicates that the engine control module (ECM) has detected invalid data being received from the parking assist control module 'A'.

3. What are the possible causes of the U045A code in a Mercury?

- Possible causes include a faulty parking assist control module, wiring issues, poor electrical connections, or a malfunctioning ECM.

4. How can I diagnose the U045A code in my Mercury?

- Diagnosing the U045A code usually involves using an OBDII scanner to retrieve the specific fault code, checking the wiring and connections related to the parking assist control module, and testing the module itself for proper functionality.

5. Can I still drive my Mercury with the U045A code present?

- It is not recommended to drive the vehicle with the U045A code present, as it may indicate a problem with the parking assist system that could affect safe operation of the vehicle.

6. How can I repair the U045A code in my Mercury?

- Repairing the U045A code typically involves addressing the root cause of the issue, which may include replacing the parking assist control module, repairing wiring or connections, or reprogramming the ECM.

7. Is the U045A code a serious issue in a Mercury?

- The U045A code should be addressed promptly, as it indicates a problem with the parking assist system that could impact the vehicle's safety and functionality.

8. Can I reset the U045A code in my Mercury without fixing the underlying issue?

- While you can clear the code using an OBDII scanner, it is not recommended to do so without addressing the root cause, as the issue may persist and potentially worsen over time.

9. How much does it cost to repair the U045A code in a Mercury?

- The cost of repairing the U045A code can vary depending on the specific cause of the issue, but it may involve parts and labor costs for replacing components or repairing wiring.

10. Can a DIY enthusiast fix the U045A code in a Mercury?

- Depending on the skill level and experience of the individual, some DIY enthusiasts may be able to diagnose and address the U045A code by following repair guides and using the necessary tools.