C1140 Nissan 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 Nissan 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.
Code C1140 Nissan Description
What are the Possible Causes of the DTC C1140 Nissan?
- 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 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 C1140 Nissan code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80β$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the C1140 Nissan code?
Need more information on how to fix the C1140 Nissan code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C1140 Nissan code diagnosed by a professional: Find a repair shop in your area
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
-
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!
-
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.
-
Code C1140 on Nissan pathfinder 2010 , ABS BRAKE VDC off and SLIP light on
-
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.
-
Code C1140 on Nissan Frontier 2010 , ABS BRAKE VDC off and SLIP light on
-
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.

Click here to enlarge image
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.