AutoCodes – Lincoln – B1C55 Lincoln

B1C55 Lincoln Code - Horn Relay Circuit

Quick Answer

The Body Control Module (BCM) monitors the Horn Relay Circuit. Common causes include Faulty Horn Relay, Horn Relay harness is open or shorted, Horn Relay 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: B1C55 Lincoln indicates Horn Relay Circuit.
Common causes: Common causes include Faulty Horn Relay, Horn Relay harness is open or shorted, Horn Relay 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 729

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 Aug 27, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1C55 Lincoln Description

The Body Control Module (BCM) monitors the Horn Relay Circuit. The BCM sets the OBDII code when the Horn Relay Circuit is not to factory specifications.

OBDII Code B1C55 Lincoln - Horn Relay Circuit - AutoCodes.com — B1C55 Lincoln Code - Horn Relay Circuit

What does this mean?

What are the Possible Causes of the DTC B1C55 Lincoln?

Faulty Horn Relay
Horn Relay harness is open or shorted
Horn Relay circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1C55 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 does this mean?

Code Tech Notes

B1C55:11 Horn Relay Circuit Short to Ground
B1C55:13 Horn Relay Circuit Open
B1C55:19 Horn Relay Circuit Current Above Threshold

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1C55 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 B1C55 Lincoln code?

Need more information on how to fix the B1C55 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1C55 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 B1C55 Lincoln Code

1. What are the common symptoms of OBDII code B1C55 in a Lincoln related to the Horn Relay Circuit?

- Common symptoms include a non-functional horn, horn going off randomly, or horn not stopping when pressed.

2. What are the possible causes of OBDII code B1C55 in a Lincoln related to the Horn Relay Circuit?

- Potential causes include a faulty horn relay, damaged wiring or connectors, a defective horn switch, or a problem with the horn itself.

3. How can I diagnose the issue with OBDII code B1C55 in a Lincoln related to the Horn Relay Circuit?

- You can diagnose the problem by checking the horn relay, inspecting the wiring and connectors for damage, testing the horn switch, and verifying the functionality of the horn.

4. What is the typical repair process for OBDII code B1C55 in a Lincoln related to the Horn Relay Circuit?

- The repair process may involve replacing the faulty horn relay, repairing damaged wiring or connectors, replacing the horn switch if necessary, or installing a new horn.

5. Can I reset the OBDII code B1C55 in a Lincoln related to the Horn Relay Circuit on my own?

- Yes, you can reset the code using an OBDII scanner or by disconnecting the car battery for a few minutes. However, it is recommended to diagnose and fix the underlying issue first.

6. Are there any safety concerns associated with OBDII code B1C55 in a Lincoln related to the Horn Relay Circuit?

- A non-functional horn can compromise safety on the road, as it is an essential tool for alerting other drivers and pedestrians. It is important to address the issue promptly.

7. How do I prevent OBDII code B1C55 in a Lincoln related to the Horn Relay Circuit from recurring?

- Regularly inspecting the horn system, including the relay, wiring, and horn switch, can help prevent issues. Promptly addressing any horn-related problems can also prevent the code from recurring.

8. Can a malfunctioning horn relay affect other electrical components in the Lincoln?

- Yes, a faulty horn relay can potentially impact other electrical systems in the vehicle, as electrical circuits are interconnected. It is important to address the issue to prevent further problems.

9. Is it necessary to replace the horn relay if it is identified as the cause of OBDII code B1C55 in a Lincoln?

- Yes, if the horn relay is found to be faulty, it is recommended to replace it with a new relay to ensure proper functioning of the horn system and to clear the OBDII code.

10. How can I test the horn relay in a Lincoln to determine if it is the source of the issue with OBDII code B1C55?

- You can test the horn relay by using a multimeter to check for continuity or resistance, or by swapping it with a known working relay to see if the horn starts functioning properly.