AutoCodes – Mercury – U0412 Mercury

U0412 Mercury Code - Invalid Data Received From Battery Energy 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 Battery Energy Control Module 'A', Battery Energy Control Module 'A' harness is open or shorted, Battery Energy 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: U0412 Mercury indicates Invalid Data Received From Battery Energy Control Module 'A'.
Common causes: Common causes include Faulty Battery Energy Control Module 'A', Battery Energy Control Module 'A' harness is open or shorted, Battery Energy 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 590

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 10, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0412 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 Battery Energy Control Module 'A' causing its integrity to be questioned.

OBDII Code U0412 Mercury - Invalid Data Received From Battery Energy Control Module 'A' - AutoCodes.com — U0412 Mercury Code - Invalid Data Received From Battery Energy Control Module 'A'

What does this mean?

What are the Possible Causes of the DTC U0412 Mercury?

Faulty Battery Energy Control Module 'A'
Battery Energy Control Module 'A' harness is open or shorted
Battery Energy Control Module 'A' circuit poor electrical connection

How to Fix the DTC U0412 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 U0412 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.

Need more information about the U0412 Mercury code?

Need more information on how to fix the U0412 Mercury code? Get Access to Factory Service Manuals

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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 U0412 Mercury Code

1. What are the common symptoms of OBDII code U0412 in a Mercury vehicle?

The common symptoms include the Check Engine Light (CEL) illuminating, decreased fuel efficiency, and potential issues with the battery system.

2. What does the OBDII code U0412 in a Mercury indicate?

The code U0412 indicates that the vehicle's onboard diagnostic system has detected invalid data coming from the Battery Energy Control Module 'A'.

3. What are the possible causes of OBDII code U0412 in a Mercury?

Possible causes include faulty wiring or connections to the battery energy control module, a malfunctioning battery control module, or software issues within the vehicle's system.

4. How can I diagnose the OBDII code U0412 in my Mercury?

Diagnosis typically involves using a diagnostic scanner to retrieve the code and then performing a thorough inspection of the battery control module, wiring, and connections for any visible issues.

5. Can I continue driving my Mercury with the U0412 code present?

It is not recommended to ignore the U0412 code, as it can lead to potential issues with the battery system and overall vehicle performance. It's best to address the problem promptly.

6. How can I reset the OBDII code U0412 in my Mercury?

Resetting the code can be done using a diagnostic scanner or by disconnecting the vehicle's battery for a few minutes. However, it is important to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

7. Is it safe to attempt repairs for the U0412 code in my Mercury on my own?

While some basic checks like inspecting wiring and connections can be done by DIY enthusiasts, more complex repairs involving the battery control module or software may require professional intervention.

8. Are there any specific repair tips for fixing the U0412 code in a Mercury?

Ensure all battery-related components are securely connected, check for any visible damage to wiring, and consider updating the vehicle's software if recommended by a professional technician.

9. Can extreme weather conditions cause the U0412 code to appear in a Mercury?

Yes, extreme temperatures or weather conditions can sometimes affect the battery control module or its connections, potentially triggering the U0412 code.

10. How much should I expect to pay to repair the U0412 code in my Mercury?

The cost of repair can vary depending on the specific issue causing the code and whether it requires parts replacement or reprogramming. It is advisable to consult a mechanic for a more accurate estimate.