AutoCodes – Generic – C1140

C1140 Code - ABS Actuator Relay

Quick Answer

The Antilock Brake System (ABS) Actuator Relay activates or deactivates each solenoid valve according to the signals transmitted by the ABS Actuator and Electric Unit (control unit). Common causes include Faulty ABS Actuator and Electric 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: C1140 indicates ABS Actuator Relay.
Common causes: Common causes include Faulty ABS Actuator and Electric 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 28,993

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 09, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1140 Description

The Antilock Brake System (ABS) Actuator Relay activates or deactivates each solenoid valve according to the signals transmitted by the ABS Actuator and Electric Unit (control unit). The Diagnostic Trouble Code (DTC) will be set when the Actuator solenoid valve relay is ON, even if the control unit sends off the signal or the Actuator solenoid valve relay is OFF, even if the control unit sends on Relay, and the Circuit signal.

OBDII Code C1140 - ABS Actuator Relay - AutoCodes.com — C1140 Code - ABS Actuator Relay

What does this mean?

What are the Possible Causes of the DTC C1140?

Faulty ABS Actuator and Electric 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 C1140?

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 C1140 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 C1140 code?

Need more information on how to fix the C1140 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1140 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1140 Infiniti — ABS Actuator Relay
C1140 Nissan — ABS Actuator Relay

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 C1140 Code

1. What is OBDII code C1140 related to ABS Actuator Relay?

The OBDII code C1140 indicates a problem with the ABS actuator relay in the vehicle's braking system.

2. What are the common symptoms of OBDII code C1140?

Common symptoms of OBDII code C1140 may include the ABS warning light illuminating on the dashboard, loss of ABS functionality, and potential issues with braking performance.

3. What are the possible causes of OBDII code C1140?

Possible causes of OBDII code C1140 include a faulty ABS actuator relay, damaged wiring or connectors in the ABS system, or a malfunctioning ABS control module.

4. How can I diagnose OBDII code C1140?

Diagnosing OBDII code C1140 typically involves using a diagnostic scanner to retrieve the code from the vehicle's computer system and then inspecting the ABS actuator relay, wiring, and connectors for any visible damage.

5. Can I continue driving with OBDII code C1140 present?

It is not recommended to continue driving with OBDII code C1140 present, as it can affect the functionality of the ABS system, potentially compromising the vehicle's braking performance and safety.

6. How can OBDII code C1140 be repaired?

Repairing OBDII code C1140 may involve replacing the faulty ABS actuator relay, repairing damaged wiring or connectors, or resetting the ABS control module after addressing the underlying issue.

7. Is it possible to reset OBDII code C1140 without repairing the issue?

Resetting OBDII code C1140 without addressing the underlying issue is not recommended, as the problem will likely persist and could lead to further issues with the ABS system.

8. Can a DIY enthusiast fix OBDII code C1140 at home?

Depending on the skill level and experience of the DIY enthusiast, it may be possible to address OBDII code C1140 at home by replacing the ABS actuator relay or repairing damaged wiring. However, professional assistance is recommended for more complex issues.

9. How much does it cost to repair OBDII code C1140?

The cost of repairing OBDII code C1140 can vary depending on the underlying issue, the parts needed for repair, and labor costs. It is advisable to consult with a mechanic or automotive technician for an accurate estimate.

10. How can I prevent OBDII code C1140 from occurring again?

To prevent OBDII code C1140 from occurring again, it is important to perform regular maintenance on the ABS system, address any electrical issues promptly, and follow the manufacturer's recommended service schedule for the vehicle.