AutoCodes – Mercury – U0126 Mercury

U0126 Mercury Code - Lost Communication With Steering Angle Sensor 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 Angle Sensor Module, Steering Angle Sensor Module harness is open or shorted, Steering Angle Sensor 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: U0126 Mercury indicates Lost Communication With Steering Angle Sensor Module.
Common causes: Common causes include Faulty Steering Angle Sensor Module, Steering Angle Sensor Module harness is open or shorted, Steering Angle Sensor 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 609

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 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0126 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 Angle Sensor Module has not been received.

OBDII Code U0126 Mercury - Lost Communication With Steering Angle Sensor Module - AutoCodes.com — U0126 Mercury Code - Lost Communication With Steering Angle Sensor Module

What does this mean?

What are the Possible Causes of the DTC U0126 Mercury?

Faulty Steering Angle Sensor Module
Steering Angle Sensor Module harness is open or shorted
Steering Angle Sensor Module circuit poor electrical connection

How to Fix the DTC U0126 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 U0126 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 U0126 Mercury Code

1. What are the common symptoms of OBDII code U0126 in a Mercury vehicle?

- Common symptoms include the loss of power steering assistance, warning lights on the dashboard, and potential steering issues.

2. What does the U0126 code "Lost Communication With Steering Angle Sensor Module" mean in a Mercury car?

- This code indicates that the vehicle's onboard computer is unable to communicate with the steering angle sensor module, which is crucial for proper steering operation.

3. What are some possible causes of the U0126 code in a Mercury vehicle?

- Possible causes include a faulty steering angle sensor module, damaged wiring or connectors, a blown fuse, or issues with the vehicle's computer system.

4. How can I diagnose the U0126 code in my Mercury car?

- Diagnosis typically involves using a professional OBDII scanner to read the code, checking the wiring and connections to the steering angle sensor module, and testing the module itself for proper functioning.

5. Is it safe to drive my Mercury car with the U0126 code present?

- It is not recommended to drive the vehicle with the U0126 code active, as it can affect the steering system's performance and potentially compromise safety.

6. Can I repair the U0126 code in my Mercury vehicle myself?

- While some basic checks like inspecting wiring and connectors can be done by DIY enthusiasts, diagnosing and repairing the root cause of the code may require professional help due to the complexity of the steering angle sensor system.

7. How much does it typically cost to repair the U0126 code in a Mercury car?

- The cost of repair can vary depending on the exact cause of the code and labor rates in your area, but it may involve replacing the steering angle sensor module, repairing wiring, or addressing other related issues.

8. Will resetting the OBDII code U0126 in my Mercury vehicle make it go away permanently?

- Simply resetting the code may temporarily clear the warning lights, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the communication problem again.

9. Is the U0126 code a common issue in Mercury vehicles?

- While not as common as some other OBDII codes, the U0126 code related to lost communication with the steering angle sensor module can occur in Mercury vehicles, especially in older models or those with electrical issues.

10. How can I prevent the U0126 code from occurring in my Mercury car in the future?

- Regular maintenance and inspections, addressing any warning lights promptly, and keeping the vehicle's electrical system in good condition can help prevent issues like the U0126 code from occurring.