AutoCodes – Mercury – U0014 Mercury

U0014 Mercury Code - Medium Speed CAN Communication Bus (+) High

Quick Answer

Multiplexing is a method of sending 2 or more signals simultaneously over a single circuit. Common causes include Diagnosis of this Diagnostic Trouble Code (DTC) is accomplished via the vehicle symptom(s), Check for more codes, Faulty Control Module. 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: U0014 Mercury indicates Medium Speed CAN Communication Bus (+) High.
Common causes: Common causes include Diagnosis of this Diagnostic Trouble Code (DTC) is accomplished via the vehicle symptom(s), Check for more codes, Faulty Control Module.
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 728

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 Mar 29, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0014 Mercury Description

Multiplexing is a method of sending 2 or more signals simultaneously over a single circuit. Multiplexing allows 2 or more electronic modules (nodes) to communicate over a twisted wire pair [data (+) and data (-)] network. The information or messages that can be communicated on these wires consists of commands, status or data. Multiplexing reduces the weight of the vehicle by reducing the number of redundant components and electrical wiring. The vehicle has 4 module communication networks connected to the DLC, located under the instrument panel. The communication networks are: HEV High Speed Controller Area Network (HS-CAN), High Speed Controller Area Network (HS-CAN), Medium Speed Controller Area Network (MS-CAN) and Infotainment Controller Area Network (I-CAN). The Diagnostic Trouble Code (DTC) U0014 sets when a Medium Speed Controller Area Network (MS-CAN) fault is present but the network may still be functional at a degraded level. One or more modules may not communicate and may not be sending or receiving messages.

OBDII Code U0014 Mercury - Medium Speed CAN Communication Bus (+) High - AutoCodes.com — U0014 Mercury Code - Medium Speed CAN Communication Bus (+) High

What does this mean?

What are the Possible Causes of the DTC U0014 Mercury?

Diagnosis of this Diagnostic Trouble Code (DTC) is accomplished via the vehicle symptom(s)
Check for more codes
Faulty Control Module
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC U0014 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 U0014 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 U0014 Mercury code?

Need more information on how to fix the U0014 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0014 Mercury code diagnosed by a professional: Find a repair shop in your area

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 U0014 Mercury Code

1. What are the common symptoms of a U0014 OBDII code in a Mercury vehicle?

- Common symptoms include issues with the vehicle's transmission, erratic shifting, and difficulties with the speedometer.

2. What can cause the U0014 code to appear in a Mercury car?

- The U0014 code is typically triggered by a malfunction in the Medium Speed CAN Communication Bus (+) High circuit.

3. How serious is a U0014 fault code in a Mercury vehicle?

- While the vehicle may still be drivable with a U0014 code, it is important to address the issue promptly to prevent further damage and ensure proper functioning of the vehicle's systems.

4. What are some potential repair tips for resolving a U0014 code in a Mercury?

- Repair tips may include checking the wiring harness for damage, inspecting connectors for corrosion, and verifying proper connections in the affected circuit.

5. Can a U0014 fault code be diagnosed and repaired at home, or is professional assistance recommended?

- Diagnosing and repairing a U0014 code may require advanced automotive knowledge and specialized tools, so professional assistance is often recommended.

6. How can a driver reset the U0014 code in a Mercury vehicle?

- The U0014 code can be reset using an OBDII scanner, but it is important to address the underlying issue causing the code to prevent it from reoccurring.

7. Are there any safety concerns associated with driving a Mercury vehicle with a U0014 fault code?

- Driving with a U0014 code may lead to transmission issues and potential safety hazards, so it is advised to have the vehicle inspected and repaired promptly.

8. What steps should be taken if a U0014 code keeps reappearing in a Mercury car after being reset?

- If the U0014 code keeps reappearing, it indicates a persistent issue that requires thorough diagnosis and repair by a qualified mechanic.

9. Is the repair for a U0014 fault code covered under warranty for Mercury vehicles?

- The coverage of repairs for a U0014 fault code under warranty may vary depending on the vehicle's age, mileage, and specific warranty terms, so it is advisable to check with the manufacturer or dealership.

10. Can a U0014 fault code affect the fuel efficiency of a Mercury vehicle?

- Yes, a U0014 fault code can potentially impact the fuel efficiency of a Mercury vehicle by causing irregularities in the transmission system, affecting overall performance.