AutoCodes – Mercury – C1103 Mercury

C1103 Mercury Code - ABS Hydraulic Brake Switch Circuit

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Hydraulic Brake Switch Circuit. Common causes include Faulty ABS Hydraulic Brake Switch, ABS Hydraulic Brake Switch harness is open or shorted, ABS Hydraulic Brake Switch 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: C1103 Mercury indicates ABS Hydraulic Brake Switch Circuit.
Common causes: Common causes include Faulty ABS Hydraulic Brake Switch, ABS Hydraulic Brake Switch harness is open or shorted, ABS Hydraulic Brake Switch 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 517

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 03, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1103 Mercury Description

The Anti-Lock Brake System (ABS) Module monitors the Hydraulic Brake Switch Circuit. The Diagnostic Trouble Code (DTC) will be set when the ABS Module detects the Hydraulic Brake Switch is not to factory specifications.

OBDII Code C1103 Mercury - ABS Hydraulic Brake Switch Circuit - AutoCodes.com — C1103 Mercury Code - ABS Hydraulic Brake Switch Circuit

What does this mean?

What are the Possible Causes of the DTC C1103 Mercury?

Faulty ABS Hydraulic Brake Switch
ABS Hydraulic Brake Switch harness is open or shorted
ABS Hydraulic Brake Switch circuit poor electrical connection

How to Fix the DTC C1103 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 C1103 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 C1103 Mercury code?

Need more information on how to fix the C1103 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1103 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 C1103 Mercury Code

1. What are the common symptoms of OBDII code C1103 in a Mercury related to the ABS Hydraulic Brake Switch Circuit?

The common symptoms include the ABS light illuminating on the dashboard, potential loss of ABS functionality, and difficulty stopping the vehicle.

2. What are some possible causes of OBDII code C1103 in a Mercury?

Possible causes of this code may include a faulty hydraulic brake switch, damaged wiring or connectors in the brake switch circuit, or a malfunction in the ABS control module.

3. How can I diagnose the ABS Hydraulic Brake Switch Circuit issue related to code C1103 in my Mercury?

You can diagnose the issue by performing a visual inspection of the brake switch and its wiring, testing the brake switch for continuity, and using a scan tool to retrieve specific ABS fault codes.

4. Can I continue driving my Mercury with OBDII code C1103 triggering the ABS Hydraulic Brake Switch Circuit issue?

It is not recommended to continue driving the vehicle with this issue as it may compromise the ABS system's functionality and affect braking performance, potentially leading to unsafe driving conditions.

5. How can I repair OBDII code C1103 in my Mercury related to the ABS Hydraulic Brake Switch Circuit?

To repair this issue, you may need to replace the faulty hydraulic brake switch, repair any damaged wiring or connectors, or reprogram the ABS control module if necessary.

6. Are there any DIY tips for addressing OBDII code C1103 in a Mercury?

While some basic diagnostics can be done by DIY enthusiasts, it is recommended to consult a professional mechanic for a comprehensive diagnosis and repair of the ABS Hydraulic Brake Switch Circuit issue.

7. How much does it typically cost to fix OBDII code C1103 in a Mercury attributed to the ABS Hydraulic Brake Switch Circuit?

The cost of fixing this issue can vary depending on the specific cause and required repairs, but it may range from a few hundred to a thousand dollars, including parts and labor.

8. Is it possible to reset the OBDII code C1103 in a Mercury without fixing the underlying issue?

Resetting the code without addressing the root cause will only temporarily clear the error code, but the issue will likely reappear once the problem persists.

9. Can extreme weather conditions impact the occurrence of OBDII code C1103 in a Mercury?

Extreme weather conditions, such as severe cold or heat, can potentially exacerbate existing issues related to the ABS Hydraulic Brake Switch Circuit, leading to the triggering of OBDII code C1103.

10. How often should I check the ABS system in my Mercury to prevent OBDII code C1103 related to the Hydraulic Brake Switch Circuit?

It is recommended to include regular ABS system checks during routine vehicle maintenance to catch any potential issues early on and prevent the occurrence of OBDII code C1103 in your Mercury.