AutoCodes – Infiniti – C1181 Infiniti

C1181 Infiniti Code - ABS Active Booster Response

Quick Answer

The Active Brake Booster consists of a vacuum booster, an active booster control group, and a delta stroke sensor. Common causes include Faulty Active Booster (Power Brake Booster), Faulty ABS Control Unit/Actuator, ABS Control Unit/Actuator harness is open or shorted. 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: C1181 Infiniti indicates ABS Active Booster Response.
Common causes: Common causes include Faulty Active Booster (Power Brake Booster), Faulty ABS Control Unit/Actuator, ABS Control Unit/Actuator harness is open or shorted.
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 1,001

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Oct 05, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1181 Infiniti Description

The Active Brake Booster consists of a vacuum booster, an active booster control group, and a delta stroke sensor. If a brake booster system malfunction occurs due to loss of vacuum, the delta stroke sensor will signal the ABS actuator and electric unit (control unit) that a booster malfunction has occurred. The active booster then applies supplemental force to the master cylinder relative to the amount of force exerted on the brake pedal. The Diagnostic Trouble Code (DTC) will be set when the Active Booster response is malfunctioning, or the signal line of the active booster response is open or shorted.

OBDII Code C1181 Infiniti - ABS Active Booster Response - AutoCodes.com — C1181 Infiniti Code - ABS Active Booster Response

What does this mean?

What are the Possible Causes of the DTC C1181 Infiniti?

Faulty Active Booster (Power Brake Booster)
Faulty ABS Control Unit/Actuator
ABS Control Unit/Actuator harness is open or shorted
ABS Control Unit/Actuator circuit poor electrical connection

How to Fix the DTC C1181 Infiniti?

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 C1181 Infiniti 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.

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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 C1181 Infiniti Code

What does the OBDII code C1181 mean for an Infiniti vehicle?

C1181 indicates a problem with the ABS (Anti-lock Braking System) active booster response, which can affect the braking performance and stability of the vehicle.

What are common symptoms of the C1181 code?

Common symptoms include the ABS warning light illuminated on the dashboard, reduced braking performance, and possibly a pulsating brake pedal during braking.

What could cause the C1181 code to trigger?

Potential causes include a malfunctioning ABS control module, issues with the brake booster, electrical problems, or sensor failures related to the ABS system.

How can I diagnose the C1181 code?

To diagnose C1181, use an OBDII scanner to read the code and any related codes, inspect the ABS system's components, check for wiring and connector issues, and test the brake booster operation.

Is it safe to drive with the C1181 code?

Driving with the C1181 code is not recommended as it can compromise braking performance, increasing the risk of accidents. It's best to address the issue promptly.

What repairs might be needed if my vehicle has the C1181 code?

Repairs may include replacing the ABS control module, fixing wiring issues, replacing the brake booster, or addressing any faulty sensors related to the ABS system.

How much does it typically cost to fix the C1181 code?

Repair costs can vary widely depending on the specific issue, but budget anywhere from $100 to $1,000 or more, depending on whether parts need replacement or if extensive labor is required.

Can I clear the C1181 code without fixing the problem?

Yes, you can clear the code using an OBDII scanner; however, if the underlying issue is not addressed, the code will likely reappear.

Are there any common preventative measures for the C1181 code?

Regular maintenance of the braking system, including checking fluid levels, inspecting brake components, and ensuring electrical connections are secure, can help prevent issues that may trigger the C1181 code.