AutoCodes – Mercury – U0016 Mercury

U0016 Mercury Code - Medium Speed CAN Communication Bus (-) Low

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: U0016 Mercury indicates Medium Speed CAN Communication Bus (-) Low.
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 625

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 U0016 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) U0016 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 U0016 Mercury - Medium Speed CAN Communication Bus (-) Low - AutoCodes.com — U0016 Mercury Code - Medium Speed CAN Communication Bus (-) Low

What does this mean?

What are the Possible Causes of the DTC U0016 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 U0016 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 U0016 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 U0016 Mercury code?

Need more information on how to fix the U0016 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0016 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 U0016 Mercury Code

1. What are the common symptoms of OBDII code U0016 "Medium Speed CAN Communication Bus (-) Low" in a Mercury vehicle?

- Common symptoms include issues with the vehicle's communication systems, such as intermittent or complete loss of communication with various control modules, dashboard warning lights, and potential drivability problems.

2. What can cause the OBDII code U0016 to trigger in a Mercury?

- The code U0016 can be triggered by issues such as damaged wiring, loose connections, faulty control modules, or a malfunction in the Medium Speed Controller Area Network (CAN) communication bus.

3. How do I diagnose the cause of OBDII code U0016 in my Mercury?

- Diagnosing the cause of code U0016 typically involves conducting a thorough inspection of the wiring and connectors related to the Medium Speed CAN bus, checking for corrosion or damage, and using a diagnostic scan tool to pinpoint the exact location of the communication fault.

4. Can I drive my Mercury with the U0016 code present?

- It is not recommended to drive your Mercury with the U0016 code present, as it can lead to potential communication failures between critical control modules, affecting the vehicle's performance and safety systems.

5. What are some repair tips for resolving OBDII code U0016 in a Mercury?

- Repair tips for fixing code U0016 may include repairing or replacing damaged wiring, ensuring all connectors are securely attached, resetting the code with a scan tool after repairs, and conducting a thorough test drive to confirm the issue has been resolved.

6. Will resetting the OBDII code U0016 in my Mercury make the problem go away permanently?

- Simply resetting the code may temporarily clear the warning light, but if the underlying issue causing code U0016 is not addressed and resolved, the code is likely to reappear and the problem will persist.

7. How much does it typically cost to repair OBDII code U0016 in a Mercury?

- The cost of repairing code U0016 can vary depending on the exact cause of the issue, the extent of the repairs needed, and labor rates in your area. It's recommended to consult with a qualified mechanic for an accurate estimate.

8. Can a DIY enthusiast fix OBDII code U0016 in a Mercury?

- While some DIY enthusiasts may have the skills and tools to address basic wiring or connection issues related to code U0016, diagnosing and repairing complex communication system faults may require specialized knowledge and equipment best handled by a professional mechanic.

9. How urgent is it to address OBDII code U0016 in a Mercury?

- It is recommended to address code U0016 promptly to prevent potential communication failures between control modules in your Mercury, which can impact various vehicle systems and safety features.

10. Is OBDII code U0016 specific to Mercury vehicles, or can it occur in other car makes?

- OBDII code U0016 "Medium Speed CAN Communication Bus (-) Low" is not specific to Mercury vehicles and can occur in other car makes equipped with a Controller Area Network (CAN) communication system.