AutoCodes – Generic – C1206

C1206 Code - ABS Rear Isolation Valve Circuit Failure

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the ABS Rear Isolation Valve. Common causes include Faulty ABS Rear Isolation Valve, ABS Rear Isolation Valve harness is open or shorted, ABS Rear 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
C1206 indicates ABS Rear Isolation Valve Circuit Failure.
Common causes
Common causes include Faulty ABS Rear Isolation Valve, ABS Rear Isolation Valve harness is open or shorted, ABS Rear 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 33,680
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 C1206 Description

The Anti-Lock Brake System (ABS) Module monitors the ABS Rear Isolation Valve. The ABS Module sets the OBDII code when the ABS Rear Isolation Valve is not to factory specifications.
OBDII Code C1206 - ABS Rear Isolation Valve Circuit Failure - AutoCodes.com
C1206 Code - ABS Rear Isolation Valve Circuit Failure

What are the Possible Causes of the DTC C1206?

  • Faulty ABS Rear Isolation Valve
  • ABS Rear Isolation Valve harness is open or shorted
  • ABS Rear Isolation Valve circuit poor electrical connection

How to Fix the DTC C1206?

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 C1206 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 C1206 code?

Need more information on how to fix the C1206 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1206 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 C1206 Code

1. What are common symptoms of OBDII code C1206 (ABS Rear Isolation Valve Circuit Failure)?

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

2. What could cause the OBDII code C1206 to trigger?

The code C1206 typically triggers due to a malfunction in the ABS rear isolation valve circuit, which may be caused by wiring faults, damaged connectors, or a faulty isolation valve.

3. How serious is the ABS Rear Isolation Valve Circuit Failure indicated by code C1206?

While the vehicle may still be drivable with this code, it is important to address the issue promptly as it could affect the proper functioning of the ABS system, potentially compromising safety during braking.

4. Can I continue driving my vehicle with OBDII code C1206 without repairing it?

It is not recommended to continue driving the vehicle without addressing the ABS Rear Isolation Valve Circuit Failure, as it could lead to ABS system malfunctions and compromise braking performance.

5. How can I diagnose the ABS Rear Isolation Valve Circuit Failure associated with code C1206?

Diagnosing this issue typically involves using a diagnostic scanner to retrieve the specific ABS trouble code, performing visual inspections of wiring and connectors, and testing the rear isolation valve for proper functionality.

6. What are some repair tips for fixing OBDII code C1206?

Repair tips may include checking and repairing any damaged wiring or connectors in the ABS rear isolation valve circuit, testing and potentially replacing the isolation valve itself, and clearing the trouble code from the system.

7. Is it possible to reset the OBDII code C1206 without fixing the underlying issue?

While it is possible to clear the trouble code temporarily, it will likely reappear if the root cause of the ABS Rear Isolation Valve Circuit Failure is not addressed.

8. How much does it typically cost to repair OBDII code C1206?

The cost of repairing code C1206 can vary depending on the cause of the issue, the extent of the problem, and labor rates in your area. It is advisable to consult a professional mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code C1206 at home?

Depending on your skill level and access to tools, it may be possible to address the ABS Rear Isolation Valve Circuit Failure associated with code C1206 at home. However, complex ABS system repairs are best left to experienced professionals.

10. How can I prevent OBDII code C1206 from recurring in the future?

To help prevent the ABS Rear Isolation Valve Circuit Failure indicated by code C1206 from occurring again, it is important to perform regular maintenance on the ABS system, address any issues promptly, and follow manufacturer-recommended service intervals.

1. What are the common symptoms of OBDII code C1206 (ABS Rear Isolation Valve Circuit Failure)?

- Common symptoms include the ABS warning light being illuminated on the dashboard, issues with ABS functionality, and potential problems with braking performance.

2. What can cause the OBDII code C1206 to trigger?

- The code C1206 is typically triggered by a fault in the rear isolation valve circuit, which may be caused by damaged wiring, a faulty isolation valve, or a problem with the ABS control module.

3. How can I diagnose the ABS Rear Isolation Valve Circuit Failure related to code C1206?

- Diagnosing code C1206 usually involves using a professional OBDII scanner to read the error code from the ABS system and performing a visual inspection of the wiring and isolation valve components.

4. Are there any safety concerns associated with code C1206?

- Yes, code C1206 indicates a potential issue with the ABS system, which can affect the vehicle's braking performance and overall safety. It is recommended to address this issue promptly.

5. Can I continue driving my vehicle with OBDII code C1206 present?

- It is not recommended to continue driving the vehicle with code C1206 active, as it may compromise the ABS system's functionality and compromise your safety on the road.

6. What are some repair tips for addressing OBDII code C1206?

- Repair tips may include checking and repairing any damaged wiring, replacing the rear isolation valve if necessary, or addressing any underlying issues with the ABS control module.

7. How much does it typically cost to repair OBDII code C1206?

- The cost of repairing code C1206 can vary depending on the specific issue causing the fault. It is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.

8. Can I reset the OBDII code C1206 on my own?

- While you can clear the error code using an OBDII scanner, it is crucial to address the underlying issue causing code C1206 to prevent it from reoccurring and ensure the safety of your vehicle.

9. Will OBDII code C1206 cause my vehicle to fail an emissions test?

- OBDII code C1206 is related to the ABS system and typically does not affect emissions. However, it is essential to resolve the issue for overall vehicle safety and performance.

10. Is OBDII code C1206 a common issue in certain vehicle makes and models?

- OBDII code C1206 related to ABS Rear Isolation Valve Circuit Failure can occur in various vehicle makes and models equipped with ABS systems.

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