AutoCodes – Nissan – C1166 Nissan

C1166 Nissan Code - Suction Valve 1

Quick Answer

The Suction Valve supplies the brake fluid from the master cylinder to the pump, when VDC/TCS is activated. Common causes include Faulty Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit), ABS Actuator and Electric Unit harness is open or shorted, ABS Actuator and Electric Unit 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: C1166 Nissan indicates Suction Valve 1.
Common causes: Common causes include Faulty Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit), ABS Actuator and Electric Unit harness is open or shorted, ABS Actuator and Electric Unit 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 4,913

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 19, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1166 Nissan Description

The Suction Valve supplies the brake fluid from the master cylinder to the pump, when VDC/TCS is activated. The Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit) monitors the Suction Valve. ABS Actuator and Electric Unit sets the OBDII code when the Suction Valve is not to factory specifications.

OBDII Code C1166 Nissan - Suction Valve 1 - AutoCodes.com — C1166 Nissan Code - Suction Valve 1

What does this mean?

What are the Possible Causes of the DTC C1166 Nissan?

Faulty Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit)
ABS Actuator and Electric Unit harness is open or shorted
ABS Actuator and Electric Unit circuit poor electrical connection

How to Fix the DTC C1166 Nissan?

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 C1166 Nissan 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 C1166 Nissan code?

Need more information on how to fix the C1166 Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1166 Nissan 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 C1166 Nissan Code

1. What are the common symptoms of OBDII code C1166 Nissan related to Suction Valve 1?

The common symptoms include issues with the vehicle's braking system, such as a spongy brake pedal or difficulty in applying brakes.

2. What could be causing the OBDII code C1166 Nissan related to Suction Valve 1?

The code C1166 in Nissan vehicles related to Suction Valve 1 is often caused by a malfunction in the brake fluid pressure sensor circuit.

3. How can I diagnose the OBDII code C1166 Nissan related to Suction Valve 1?

Diagnosing this code typically involves checking the brake fluid level, inspecting the brake fluid pressure sensor, and testing the related wiring for any faults.

4. Can I still drive my vehicle with the OBDII code C1166 Nissan related to Suction Valve 1?

It is not recommended to drive the vehicle with this code present, as it can affect the proper functioning of the braking system and compromise your safety on the road.

5. How can I repair the OBDII code C1166 Nissan related to Suction Valve 1?

Repairing this code may involve replacing the faulty brake fluid pressure sensor, repairing any damaged wiring, or resetting the system after addressing the underlying issue.

6. Are there any DIY tips for fixing the OBDII code C1166 Nissan related to Suction Valve 1?

While some basic troubleshooting steps can be done by DIY enthusiasts, it is advisable to seek professional help for a thorough diagnosis and repair of this code.

7. How much does it cost to fix the OBDII code C1166 Nissan related to Suction Valve 1?

The cost of fixing this code can vary depending on the extent of the issue, parts needed for replacement, and labor charges. It's best to consult a mechanic for an accurate estimate.

8. Can a faulty Suction Valve 1 cause other OBDII codes to appear in a Nissan vehicle?

Yes, a malfunction in the Suction Valve 1 can sometimes trigger other related codes, so it's essential to address the root cause promptly to prevent further issues.

9. Will resetting the OBDII code C1166 Nissan related to Suction Valve 1 make it go away permanently?

Simply resetting the code may temporarily clear the error, but if the underlying issue is not fixed, the code is likely to reappear. It's crucial to address the root cause for a permanent solution.

10. How long does it typically take to repair the OBDII code C1166 Nissan related to Suction Valve 1?

The repair time can vary based on the specific issue and the expertise of the mechanic. It's best to consult a professional for an estimate of the repair duration.