AutoCodes – Lincoln – C2805 Lincoln

C2805 Lincoln Code - Brake Pressure Transducer Ground Circuit Short To Battery

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
C2805 Lincoln indicates Brake Pressure Transducer Ground Circuit Short To Battery.
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 972
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 C2805 Lincoln 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 C2805 Lincoln - Brake Pressure Transducer Ground Circuit Short To Battery - AutoCodes.com
C2805 Lincoln Code - Brake Pressure Transducer Ground Circuit Short To Battery

What are the Possible Causes of the DTC C2805 Lincoln?

  • 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 C2805 Lincoln?

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 C2805 Lincoln 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 C2805 Lincoln code?

Need more information on how to fix the C2805 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C2805 Lincoln 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 C2805 Lincoln Code

1. What are the common symptoms of OBDII code C2805 Lincoln (Brake Pressure Transducer Ground Circuit Short To Battery)?

The common symptoms include the ABS warning light coming on, loss of ABS functionality, and potential issues with the brake system.

2. What are the possible causes of OBDII code C2805 in a Lincoln vehicle?

The code C2805 may be triggered by a short to battery in the brake pressure transducer ground circuit, faulty wiring, or a malfunctioning brake pressure transducer.

3. How can I diagnose the OBDII code C2805 in my Lincoln vehicle?

Diagnosing the code C2805 involves using a diagnostic scanner to retrieve the trouble codes, inspecting the brake pressure transducer and related wiring, and performing necessary tests to identify the root cause.

4. Is it safe to drive my Lincoln with OBDII code C2805 (Brake Pressure Transducer Ground Circuit Short To Battery)?

It is not recommended to drive the vehicle with the code C2805 present, as it may affect the proper functioning of the ABS system and compromise braking performance.

5. How can I repair OBDII code C2805 in my Lincoln vehicle?

Repairing the code C2805 typically involves locating and repairing the short to battery in the brake pressure transducer ground circuit, replacing any damaged wiring, or replacing the faulty brake pressure transducer.

6. Can a DIY enthusiast fix OBDII code C2805 in a Lincoln vehicle?

While some experienced DIY enthusiasts may be able to diagnose and repair the code C2805, it is recommended to seek professional help to ensure proper diagnosis and repair of the ABS system.

7. How much does it cost to repair OBDII code C2805 in a Lincoln vehicle?

The cost of repairing the code C2805 can vary depending on the root cause of the issue, the extent of the repair needed, and labor rates. It is advisable to obtain quotes from reputable automotive repair shops.

8. Will resetting the OBDII code C2805 clear the issue in my Lincoln vehicle?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause of the problem.

9. Can OBDII code C2805 cause other problems in my Lincoln vehicle?

If left unresolved, OBDII code C2805 can lead to potential issues with the ABS system, affecting the vehicle's braking performance and safety. It is essential to address the code promptly.

10. How often does OBDII code C2805 occur in Lincoln vehicles?

While OBDII code C2805 (Brake Pressure Transducer Ground Circuit Short To Battery) is not extremely common, it can still occur in Lincoln vehicles due to various factors such as age, wear and tear, or electrical issues.

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