AutoCodes – Generic – C1199

C1199 Code - ABS Front Left Isolation Valve Circuit Open

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
C1199 indicates ABS Front Left Isolation Valve Circuit Open.
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 18,994
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 21, 2020
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Code C1199 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 C1199 - ABS Front Left Isolation Valve Circuit Open - AutoCodes.com
C1199 Code - ABS Front Left Isolation Valve Circuit Open

What are the Possible Causes of the DTC C1199?

  • 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 C1199?

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 C1199 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 C1199 code?

Need more information on how to fix the C1199 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1199 code diagnosed by a professional: Find a repair shop in your area

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 C1199 Code

1. What are the common symptoms of OBDII code C1199 ABS Front Left Isolation Valve Circuit Open?

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

2. What can cause the ABS Front Left Isolation Valve Circuit Open code to appear?

This code is typically triggered by a fault in the wiring or connectors associated with the ABS front left isolation valve, a malfunctioning isolation valve itself, or a problem with the ABS control module.

3. How can I diagnose the ABS Front Left Isolation Valve Circuit Open issue?

Diagnosis often involves using a professional OBDII scanner to read the specific trouble codes, conducting a visual inspection of the wiring and connectors, and performing electrical tests to pinpoint the exact cause of the circuit open condition.

4. Is it safe to drive my vehicle with the C1199 code related to the ABS front left isolation valve?

It is not advisable to drive the vehicle with this code present, as it may lead to compromised braking performance and potential safety hazards. It is recommended to address the issue promptly.

5. What are some possible repair tips for fixing the ABS Front Left Isolation Valve Circuit Open problem?

Repair options may include checking and repairing any damaged wiring or connectors, replacing the faulty isolation valve, ensuring proper connection to the ABS control module, and clearing the trouble codes after the repairs are made.

6. Can weather conditions affect the ABS Front Left Isolation Valve Circuit Open issue?

Extreme weather conditions, such as excessive moisture or corrosion, can contribute to electrical problems in the ABS system, potentially leading to the circuit open fault. It is essential to keep the system protected from such conditions.

7. How much does it typically cost to repair the ABS Front Left Isolation Valve Circuit Open problem?

The cost of repairs can vary depending on the root cause of the issue, the need for replacement parts, and labor charges. It is recommended to consult with a professional mechanic for a precise cost estimate.

8. Will resetting the trouble codes resolve the ABS Front Left Isolation Valve Circuit Open issue?

Resetting the trouble codes may temporarily clear the warning lights, but it will not fix the underlying problem causing the circuit open fault. It is crucial to address the root cause to prevent the code from reappearing.

9. Are there any preventive maintenance measures to avoid the ABS Front Left Isolation Valve Circuit Open code?

Regular inspection of the ABS system, proper maintenance of electrical components, and addressing any warning signs promptly can help prevent issues like the ABS front left isolation valve circuit open fault.

10. Can I attempt to repair the ABS Front Left Isolation Valve Circuit Open issue myself, or should I seek professional help?

While some basic inspections and repairs may be possible for experienced DIY enthusiasts, resolving complex ABS system faults like this code often requires specialized knowledge and tools. It is generally recommended to consult a professional mechanic for accurate diagnosis and repairs.

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