AutoCodes – Mercury – C2799 Mercury

C2799 Mercury Code - Brake Pressure Transducer Supply Circuit Open

Quick Answer

The Brake Pressure Transducer is attached to the brake master cylinder and is hardwired to the Trailer Brake Control (TBC) Module. Common causes include Faulty Brake Pressure Transducer, Brake Pressure Transducer harness is open or shorted, Brake Pressure Transducer 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
C2799 Mercury indicates Brake Pressure Transducer Supply Circuit Open.
Common causes
Common causes include Faulty Brake Pressure Transducer, Brake Pressure Transducer harness is open or shorted, Brake Pressure Transducer 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 788
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code C2799 Mercury Description

The Brake Pressure Transducer is attached to the brake master cylinder and is hardwired to the Trailer Brake Control (TBC) Module. The transducer and the master cylinder are installed new as an assembly. The TBC module supplies voltage to the transducer and ground along circuits. The voltage returned from the transducer and is used by the TBC module to determine current brake pressure. Trailer Brake Control (TBC) Module sets the OBDII code when the Brake Pressure Transducer is not to factory specifications.
OBDII Code C2799 Mercury - Brake Pressure Transducer Supply Circuit Open - AutoCodes.com
C2799 Mercury Code - Brake Pressure Transducer Supply Circuit Open

What are the Possible Causes of the DTC C2799 Mercury?

  • Faulty Brake Pressure Transducer
  • Brake Pressure Transducer harness is open or shorted
  • Brake Pressure Transducer circuit poor electrical connection
  • Faulty Trailer Brake Control (TBC) Module

How to Fix the DTC C2799 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 C2799 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 C2799 Mercury code?

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Need Help with the Code?

Get the C2799 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 C2799 Mercury Code

1. What are some common symptoms of OBDII code C2799 in a Mercury related to the brake pressure transducer supply circuit being open?

The common symptoms include the ABS warning light illuminating on the dashboard, loss of ABS functionality, and potential issues with the brake system's performance.

2. What are the possible causes of OBDII code C2799 indicating a brake pressure transducer supply circuit open in a Mercury?

Possible causes include damaged wiring or connectors in the brake pressure transducer circuit, a faulty brake pressure transducer, or issues with the ABS module.

3. How can I diagnose the OBDII code C2799 in my Mercury related to the brake pressure transducer supply circuit being open?

Diagnosis typically involves using a scan tool to read the code, inspecting the wiring and connectors for any visible damage, testing the brake pressure transducer, and checking the ABS module for proper functioning.

4. Is it safe to continue driving my Mercury with OBDII code C2799 indicating a brake pressure transducer supply circuit open?

It is not recommended to drive the vehicle with this code present, as it can affect the proper functioning of the ABS system, potentially compromising braking performance in certain situations.

5. What are some repair tips for addressing OBDII code C2799 in a Mercury related to the brake pressure transducer supply circuit being open?

Repair tips include checking and repairing any damaged wiring or connectors, replacing the faulty brake pressure transducer if necessary, and ensuring the ABS module is functioning correctly.

6. Can I reset the OBDII code C2799 in my Mercury after addressing the brake pressure transducer supply circuit issue?

Once the underlying issue causing the code has been fixed, you can typically reset the code using a scan tool to clear the fault codes stored in the vehicle's computer.

7. How serious is OBDII code C2799 in a Mercury indicating a brake pressure transducer supply circuit open?

While the code itself may not cause immediate safety concerns, it is important to address the underlying issue promptly to ensure the proper functioning of the ABS system and maintain optimal braking performance.

8. Are there any common mistakes to avoid when dealing with OBDII code C2799 related to the brake pressure transducer supply circuit in a Mercury?

One common mistake to avoid is overlooking the importance of thoroughly inspecting the wiring and connectors for any damage, as these issues are often the root cause of the problem.

9. Can a DIY enthusiast with some automotive experience fix OBDII code C2799 indicating a brake pressure transducer supply circuit open in a Mercury?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this code by following repair procedures carefully and accurately diagnosing the issue.

10. How much can I expect to pay to have OBDII code C2799 related to the brake pressure transducer supply circuit open diagnosed and repaired by a professional for a Mercury?

Costs can vary depending on the labor rates of the repair shop, the extent of the issue, and any parts that need to be replaced, but you can typically expect to pay a few hundred dollars for diagnosis and repair of this type of issue.

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