AutoCodes – Mercury – U0212 Mercury

U0212 Mercury Code - Lost Communication With Steering Column Control Module

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 Steering Column Control Module, Steering Column Control Module harness is open or shorted, Steering Column Control Module 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: U0212 Mercury indicates Lost Communication With Steering Column Control Module.
Common causes: Common causes include Faulty Steering Column Control Module, Steering Column Control Module harness is open or shorted, Steering Column Control Module 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 487

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 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0212 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. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Steering Column Control Module has not been received.

OBDII Code U0212 Mercury - Lost Communication With Steering Column Control Module - AutoCodes.com — U0212 Mercury Code - Lost Communication With Steering Column Control Module

What does this mean?

What are the Possible Causes of the DTC U0212 Mercury?

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

How to Fix the DTC U0212 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 U0212 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 U0212 Mercury Code

1. What are the common symptoms of OBDII code U0212 in a Mercury related to lost communication with the steering column control module?

- Common symptoms include the loss of power steering functionality, the steering wheel feeling stiff or difficult to turn, and potential warning lights illuminated on the dashboard.

2. What are some possible causes of the U0212 OBDII code indicating lost communication with the steering column control module in a Mercury?

- Possible causes include a faulty steering column control module, damaged wiring or connectors, a blown fuse, software issues, or a problem with the vehicle's main computer.

3. Can the U0212 code be triggered by a low battery in the Mercury?

- Yes, a low or failing battery can potentially trigger the U0212 code due to insufficient power supply affecting communication between modules in the vehicle.

4. How can I diagnose and repair the U0212 code related to lost communication with the steering column control module in my Mercury?

- Diagnosis typically involves checking the wiring and connectors for damage, testing the steering column control module for functionality, and verifying power and communication signals. Repair may involve replacing a faulty module, repairing wiring, or addressing power supply issues.

5. Is it safe to continue driving my Mercury with the U0212 OBDII code triggered?

- It is recommended to address the issue promptly to avoid potential safety hazards, such as loss of power steering assistance, which can make it challenging to control the vehicle, especially at low speeds or during maneuvers.

6. Can I reset the U0212 code in my Mercury to see if it reoccurs?

- While you can clear the code temporarily, it is essential to diagnose and address the root cause of the communication loss to prevent the code from reoccurring and potentially causing further issues.

7. Are there any specific Mercury models known to be more prone to experiencing the U0212 code?

- While the U0212 code related to communication loss with the steering column control module can occur in various Mercury models, certain vehicles with electronic power steering systems may be more susceptible to this issue.

8. Will a simple battery disconnect and reconnect procedure resolve the U0212 code in my Mercury?

- A simple battery disconnect and reconnect may temporarily clear the code, but if the underlying issue causing the lost communication with the steering column control module persists, the code is likely to reappear.

9. How can a professional mechanic help in diagnosing and fixing the U0212 code in my Mercury?

- A professional mechanic can utilize specialized diagnostic tools to pinpoint the exact cause of the communication loss, perform advanced troubleshooting procedures, and make accurate repairs to resolve the U0212 code effectively.

10. Is it possible for a DIY enthusiast to troubleshoot and fix the U0212 code issue in a Mercury without professional help?

- While some basic checks like inspecting wiring or connectors can be done by a DIY enthusiast, diagnosing and repairing the U0212 code related to lost communication with the steering column control module often requires advanced knowledge and tools best handled by a professional mechanic.