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C1140 Nissan Code - ABS Actuator Relay

Quick Answer

The C1140 code in Nissan vehicles refers to an issue with the ABS actuator relay. Common causes include Faulty ABS actuator relay, Electrical wiring issues or shorts in the ABS system, Corrosion or damage to ABS system components. 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 Nissan indicates ABS Actuator Relay.
Common causes
Common causes include Faulty ABS actuator relay, Electrical wiring issues or shorts in the ABS system, Corrosion or damage to ABS system components.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code C1140 Nissan Description

The C1140 code in Nissan vehicles refers to an issue with the ABS actuator relay. The ABS (Anti-lock Braking System) actuator relay is responsible for controlling the distribution of brake fluid pressure to each wheel during braking, helping to prevent wheel lock-up and maintain control of the vehicle. When this relay malfunctions or fails, it can affect the proper operation of the ABS system, potentially leading to compromised braking performance and safety issues. If left unaddressed, this issue can result in the ABS system becoming inoperable, increasing the risk of skidding or loss of control during emergency braking situations.

OBDII Code C1140 Nissan - ABS Actuator Relay
C1140 Nissan Code - ABS Actuator Relay

Common Causes of C1140 Nissan

  1. Faulty ABS actuator relay
  2. Electrical wiring issues or shorts in the ABS system
  3. Corrosion or damage to ABS system components
  4. Problems with the vehicle's battery or charging system
  5. Software or programming issues in the ABS control module

Symptoms of C1140 Nissan

  1. Illumination of the ABS warning light on the dashboard
  2. Decreased braking effectiveness or longer braking distances
  3. Unusual noises coming from the ABS system during operation
  4. Inconsistent brake pedal feel or response
  5. ABS system engaging unexpectedly or not engaging when needed

How to Fix C1140 Nissan

  1. Diagnose the specific cause of the C1140 code using a professional diagnostic scanner
  2. Inspect the ABS actuator relay and associated wiring for damage or corrosion
  3. Replace the faulty ABS actuator relay if necessary
  4. Clear the diagnostic trouble codes from the ABS system
  5. Test drive the vehicle to ensure proper ABS system operation

Cost to Fix C1140 Nissan

The cost of repairing the ABS actuator relay can vary depending on the specific cause of the issue and the labor rates in your area. On average, the parts for this repair can range from $150 to $300, while labor costs can be between $100 and $200. Therefore, the total repair cost for addressing the C1140 code may fall between $250 and $500. It's recommended to consult with a trusted auto repair shop to get an accurate estimate based on your vehicle's make and model.

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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 C1140 Nissan Code

1. What does the OBDII code C1140 for Nissan ABS Actuator Relay indicate?

The code C1140 in a Nissan vehicle refers to a fault with the ABS actuator relay circuit.

2. What are the common symptoms of a C1140 ABS Actuator Relay fault in a Nissan?

Common symptoms include the ABS warning light being illuminated on the dashboard, potential loss of ABS functionality, and unusual braking behavior.

3. What are the possible causes of a C1140 ABS Actuator Relay code in a Nissan?

Potential causes of this code include a faulty ABS actuator relay, damaged wiring or connectors in the ABS system, or a malfunctioning ABS actuator assembly.

4. How can I diagnose a C1140 ABS Actuator Relay issue in my Nissan?

Diagnosing this issue typically involves using a diagnostic scanner to retrieve the specific fault code, performing a visual inspection of the ABS components, and testing the relay and related circuits for proper function.

5. Can I still drive my Nissan with a C1140 ABS Actuator Relay fault?

It is not recommended to drive the vehicle with a C1140 code present, as it may affect the performance of the ABS system and compromise safety. It is advisable to address the issue promptly.

6. How can I repair a C1140 ABS Actuator Relay problem in my Nissan?

Repairing this issue usually involves replacing the faulty ABS actuator relay, repairing any damaged wiring or connectors, or addressing any other underlying issues causing the fault code.

7. Is it possible to reset the C1140 ABS Actuator Relay code in a Nissan without fixing the problem?

While clearing the fault code may temporarily turn off the warning light, the underlying issue causing the code will persist. It is essential to address the root cause of the problem for a permanent solution.

8. Can a DIY enthusiast fix a C1140 ABS Actuator Relay fault in a Nissan?

Depending on their skill level and access to tools, a knowledgeable DIY enthusiast may be able to address this issue by following repair guides and using the necessary diagnostic equipment.

9. How much does it cost to repair a C1140 ABS Actuator Relay fault at a professional auto repair shop?

The cost of repairing a C1140 ABS Actuator Relay fault can vary depending on the extent of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed.

10. Are there any preventive maintenance tips to avoid a C1140 ABS Actuator Relay fault in a Nissan?

Regularly inspecting the ABS system components, ensuring proper maintenance of the vehicle's braking system, and addressing any warning lights promptly can help prevent ABS-related faults like C1140 in a Nissan.

Discuss the causes and fixes for C1140 Nissan OBDII Code

Submit a New Comment

  • I have this code along with C1111 and C1104 on a 2004 Nissan Maxima. Anyone else have the same issue? Red brake light is lit!

    Reply to Comment

  • You may have a problem with the ABS Electrical Unit. There could be a problem with the ABS relay, but the ABS relay is part of the ABS Electrical Unit. You could start by inspecting the ABS Electrical Unit connector.

    Reply to Comment

  • Code C1140 on Nissan pathfinder 2010 , ABS BRAKE VDC off and SLIP light on

    Reply to Comment

  • According to the factory service manual, you have a problem with the "ABS actuator and electric unit". Before replacing the unit, try disconnecting and reconnecting the electrical connector. Sometimes is just poor electrical connection at the connector.

    Reply to Comment

  • Code C1140 on Nissan Frontier 2010 , ABS BRAKE VDC off and SLIP light on

    Reply to Comment

  • According to the factory service manual, you have a problem with the "ABS Actuator and Electric Unit" (ABS Actuator). Before replacing the unit, try disconnecting and reconnecting the electrical connector. Sometimes there is just poor electrical connection at the connector.

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    Reply to Comment