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Engine-Codes – Generic – C2797

C2797 Code - Brake Pressure Transducer Supply Short To Battery

Quick Answer

The C2797 diagnostic trouble code (DTC) indicates that there is a short to the battery in the brake pressure transducer supply circuit. Common causes include Short circuit in the brake pressure transducer supply wiring, Faulty brake pressure transducer, Corrosion or damage to the connectors in the brake pressure transducer circuit. 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
C2797 indicates Brake Pressure Transducer Supply Short To Battery.
Common causes
Common causes include Short circuit in the brake pressure transducer supply wiring, Faulty brake pressure transducer, Corrosion or damage to the connectors in the brake pressure transducer circuit.
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 10, 2024
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Code C2797 Description

The C2797 diagnostic trouble code (DTC) indicates that there is a short to the battery in the brake pressure transducer supply circuit. The brake pressure transducer is a crucial component in the vehicle's brake system, responsible for measuring the hydraulic pressure within the brake system. This information is vital for the proper functioning of the vehicle's anti-lock brake system (ABS) and stability control system.

OBDII Code C2797 - Brake Pressure Transducer Supply Short To Battery
C2797 Code - Brake Pressure Transducer Supply Short To Battery

Common Causes of C2797

  1. Short circuit in the brake pressure transducer supply wiring
  2. Faulty brake pressure transducer
  3. Corrosion or damage to the connectors in the brake pressure transducer circuit
  4. Electrical issues in the ABS or stability control system module
  5. Water or debris intrusion in the brake pressure transducer circuit

Symptoms of C2797

  1. Illumination of the ABS warning light on the dashboard
  2. Erratic behavior of the ABS system, such as pulsating brake pedal or loss of traction during braking
  3. Stability control system malfunction, such as difficulty maintaining control during cornering
  4. Reduced braking performance, longer stopping distances

How to Fix C2797

  1. Begin by performing a visual inspection of the brake pressure transducer supply circuit, checking for any visible damage, corrosion, or loose connections.
  2. Use a multimeter to test the continuity and resistance of the brake pressure transducer supply wiring to identify any short circuits or open circuits.
  3. Inspect the brake pressure transducer for any signs of damage or malfunction, replacing it if necessary.
  4. Check and clean the connectors in the brake pressure transducer circuit to ensure proper electrical contact.
  5. Clear the DTC using a diagnostic scan tool and perform a test drive to verify that the issue has been resolved.

Cost to Fix C2797

The cost of repairing a brake pressure transducer supply short to battery issue can vary depending on the specific vehicle make and model, as well as the extent of the damage. In general, the parts required for this repair, such as a new brake pressure transducer or wiring harness, can range from $100 to $300. Labor costs can add an additional $100 to $200, bringing the total repair cost to approximately $200 to $500.

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Code C2797 Information for Specific Makes

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 C2797 Code

1. What are the common symptoms of OBDII code C2797 (Brake Pressure Transducer Supply Short To Battery)?

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

2. What could cause the OBDII code C2797 to appear?

The code C2797 typically appears due to a short circuit between the brake pressure transducer supply and the battery. This can be caused by damaged wiring, faulty connectors, or a malfunctioning brake pressure transducer.

3. How can I diagnose the cause of OBDII code C2797?

To diagnose the cause of code C2797, it's recommended to perform a thorough inspection of the wiring harness, connectors, and brake pressure transducer. Using a multimeter to check for continuity and shorts can help pinpoint the issue.

4. Can I continue to drive my vehicle with OBDII code C2797 present?

It is not recommended to drive your vehicle with OBDII code C2797 active, as it indicates a potential issue with the brake system that could compromise safety. It's best to address the problem promptly.

5. What are the repair options for OBDII code C2797?

Repair options for code C2797 may include repairing or replacing damaged wiring, fixing faulty connectors, or replacing the brake pressure transducer if necessary. It's important to follow manufacturer guidelines for proper repair procedures.

6. How serious is OBDII code C2797?

OBDII code C2797 is considered a serious issue as it relates to the brake system's functionality. Ignoring this code could lead to compromised braking performance and safety hazards. It should be addressed promptly.

7. Can a DIY enthusiast fix OBDII code C2797?

DIY enthusiasts with automotive repair experience may be able to fix OBDII code C2797, especially if they have the necessary tools and knowledge to diagnose and repair electrical issues. However, if unsure, it's best to consult a professional mechanic.

8. How long does it typically take to repair OBDII code C2797?

The repair time for OBDII code C2797 can vary depending on the exact cause of the issue and the extent of repairs needed. It could take anywhere from a few hours to a full day, depending on the complexity of the repair.

9. Will resetting the OBDII code C2797 make it go away permanently?

Simply resetting the code without addressing the underlying issue will not make it go away permanently. The root cause of the problem must be diagnosed and repaired to prevent the code from reappearing.

10. Is it necessary to have the OBDII code C2797 cleared after repairs are completed?

Once the repairs for OBDII code C2797 are completed, it's important to clear the code using an OBDII scanner. This ensures that the system recognizes the issue has been resolved and helps monitor for any future problems.

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