AutoCodes – Mercury – C1198 Mercury

C1198 Mercury Code - ABS Front Left Isolation Valve Circuit Failure

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the ABS Front Left Isolation Valve. Common causes include Faulty ABS Front Left Isolation Valve, ABS Front Left Isolation Valve harness is open or shorted, ABS Front Left Isolation Valve 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: C1198 Mercury indicates ABS Front Left Isolation Valve Circuit Failure.
Common causes: Common causes include Faulty ABS Front Left Isolation Valve, ABS Front Left Isolation Valve harness is open or shorted, ABS Front Left Isolation Valve 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 1,018

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 20, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1198 Mercury Description

The Anti-Lock Brake System (ABS) Module monitors the ABS Front Left Isolation Valve. The ABS Module sets the OBDII code when the ABS Front Left Isolation Valve is not to factory specifications.

OBDII Code C1198 Mercury - ABS Front Left Isolation Valve Circuit Failure - AutoCodes.com — C1198 Mercury Code - ABS Front Left Isolation Valve Circuit Failure

What does this mean?

What are the Possible Causes of the DTC C1198 Mercury?

Faulty ABS Front Left Isolation Valve
ABS Front Left Isolation Valve harness is open or shorted
ABS Front Left Isolation Valve circuit poor electrical connection

How to Fix the DTC C1198 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 C1198 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 C1198 Mercury code?

Need more information on how to fix the C1198 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1198 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 C1198 Mercury Code

1. What are the common symptoms of OBDII code C1198 Mercury (ABS Front Left Isolation Valve Circuit Failure)?

The common symptoms include the ABS warning light illuminating on the dashboard, potential loss of ABS functionality, and possible issues with braking performance.

2. What are possible causes of OBDII code C1198 Mercury?

Possible causes can include faulty wiring or connectors in the front left isolation valve circuit, a malfunctioning isolation valve, a damaged ABS control module, or issues with the vehicle's electrical system.

3. How can I diagnose the ABS Front Left Isolation Valve Circuit Failure in my Mercury?

Diagnosis typically involves using an OBDII scanner to retrieve the specific trouble code, conducting a visual inspection of the wiring and connectors, testing the isolation valve for proper operation, and checking the ABS control module for any faults.

4. Can I continue driving my Mercury with OBDII code C1198 present?

It is not recommended to continue driving with this code present, as it can affect the proper functioning of the ABS system, potentially compromising braking performance and overall safety.

5. How can I repair OBDII code C1198 Mercury?

Repair options may include repairing or replacing damaged wiring or connectors, replacing the front left isolation valve if faulty, addressing any issues with the ABS control module, and ensuring proper functioning of the electrical system.

6. Is it possible to reset the OBDII code C1198 Mercury without fixing the underlying issue?

While clearing the code may temporarily turn off the warning light, it will likely reappear if the root cause of the ABS Front Left Isolation Valve Circuit Failure is not addressed.

7. Can extreme weather conditions cause OBDII code C1198 in a Mercury?

Extreme weather conditions, such as extreme cold or heat, can potentially exacerbate existing issues in the ABS system, leading to the triggering of OBDII code C1198.

8. How much does it typically cost to repair OBDII code C1198 in a Mercury?

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

9. Are there any preventive maintenance tips to avoid OBDII code C1198 in the future?

Regularly inspecting and maintaining the ABS system, checking for any signs of wear or damage, and addressing any warning lights promptly can help prevent issues that may trigger OBDII code C1198.

10. Can a DIY enthusiast with automotive knowledge fix OBDII code C1198 in a Mercury?

Depending on the specific cause of the issue, some DIY enthusiasts with the necessary skills and tools may be able to address OBDII code C1198, but complex electrical or ABS system problems may require professional diagnosis and repair.