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Engine-Codes – Mercury – C0039 Mercury

C0039 Mercury Code - Right Rear Tone Wheel

Quick Answer

The C0039 diagnostic trouble code (DTC) for Mercury vehicles specifically refers to a problem with the right rear tone wheel. Common causes include Tone wheel damaged due to corrosion or physical impact, Faulty wheel speed sensor, Loose or missing tone wheel mounting bolts. 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
C0039 Mercury indicates Right Rear Tone Wheel.
Common causes
Common causes include Tone wheel damaged due to corrosion or physical impact, Faulty wheel speed sensor, Loose or missing tone wheel mounting bolts.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code C0039 Mercury Description

The C0039 diagnostic trouble code (DTC) for Mercury vehicles specifically refers to a problem with the right rear tone wheel. The tone wheel is a toothed metal ring that is mounted on the rear wheel hub or axle shaft. It is used in conjunction with the vehicle's wheel speed sensors to provide data to the anti-lock braking system (ABS) and traction control system. The tone wheel's rotation generates a signal that helps the ABS system determine if a wheel is locking up during braking or if traction is being lost.

OBDII Code C0039 Mercury - Right Rear Tone Wheel
C0039 Mercury Code - Right Rear Tone Wheel

Common Causes of C0039 Mercury

  1. Tone wheel damaged due to corrosion or physical impact
  2. Faulty wheel speed sensor
  3. Loose or missing tone wheel mounting bolts
  4. Wiring or electrical connection issues between the tone wheel and ABS module
  5. General wear and tear over time

Symptoms of C0039 Mercury

  1. ABS warning light illuminated on the dashboard
  2. Traction control system malfunction warning
  3. Unusual noises coming from the right rear wheel area
  4. Increased stopping distances during braking
  5. Vehicle stability issues, especially during slippery conditions

How to Fix C0039 Mercury

  1. Begin by safely lifting the vehicle and removing the right rear wheel to access the tone wheel.
  2. Inspect the tone wheel for any signs of damage, corrosion, or missing teeth. Replace the tone wheel if necessary.
  3. Check the wheel speed sensor for proper operation and replace it if found to be faulty.
  4. Verify the integrity of the tone wheel mounting bolts and tighten or replace them as needed.
  5. Test the ABS and traction control systems after reassembly to ensure proper functionality.

Cost to Fix C0039 Mercury

The cost of repairing a right rear tone wheel issue on a Mercury vehicle can vary depending on the extent of the damage, the specific model of the vehicle, and the labor rates in your area. On average, the parts for this repair can range from $50 to $150, while labor costs can range from $100 to $300. Therefore, the total cost for this repair could be anywhere from $150 to $450. It is recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your specific circumstances.

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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 C0039 Mercury Code

1. What are the common symptoms of OBDII code C0039 (Mercury) for the Right Rear Tone Wheel?

The common symptoms include ABS warning light illuminated on the dashboard, traction control issues, and potential difficulty in braking.

2. What can cause the OBDII code C0039 (Mercury) for the Right Rear Tone Wheel?

The code C0039 can be triggered by a faulty right rear tone wheel sensor, damaged wiring, or a corroded connection.

3. How can I diagnose the issue related to the OBDII code C0039 (Mercury) for the Right Rear Tone Wheel?

You can diagnose the problem by performing a visual inspection of the right rear tone wheel sensor and its wiring, conducting a scan tool test to pinpoint the exact issue, and checking for any signs of physical damage.

4. What are some repair tips for fixing the OBDII code C0039 (Mercury) for the Right Rear Tone Wheel?

Repair tips include cleaning the tone wheel sensor and its connection, replacing the sensor if necessary, checking and repairing any damaged wiring, and clearing the trouble code with a scan tool.

5. Can I drive my Mercury with the OBDII code C0039 for the Right Rear Tone Wheel?

It is not recommended to drive the vehicle with the ABS warning light on, as it indicates potential safety issues related to the braking system. Immediate attention and repair are advised.

6. How much does it typically cost to repair the OBDII code C0039 (Mercury) for the Right Rear Tone Wheel?

The cost of repairing the C0039 code can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor.

7. Is it possible to clear the OBDII code C0039 (Mercury) for the Right Rear Tone Wheel without fixing the issue?

Clearing the code without addressing the underlying problem is not recommended, as the issue may persist and affect the vehicle's safety systems.

8. Can a DIY enthusiast fix the OBDII code C0039 (Mercury) for the Right Rear Tone Wheel?

Depending on the individual's mechanical skills and tools available, some DIY enthusiasts may be able to address the C0039 code by following repair guides and tutorials.

9. How urgent is it to address the OBDII code C0039 (Mercury) for the Right Rear Tone Wheel?

Addressing the C0039 code promptly is important to ensure the proper functioning of the ABS and traction control systems, which are crucial for vehicle safety.

10. Are there any recalls related to the OBDII code C0039 (Mercury) for the Right Rear Tone Wheel?

It is advisable to check with the manufacturer or a qualified dealership to see if there are any recalls or technical service bulletins related to the C0039 code for your specific Mercury model.

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