AutoCodes – Infiniti – C1120 Infiniti

C1120 Infiniti Code - Front Left Input ABS Solenoid

Quick Answer

The control unit computes the wheel rotating speed by the signal sent from the sensor. Common causes include Faulty ABS Actuator/Electric Unit, ABS Actuator/Electric Unit harness is open or shorted, ABS Actuator/Electric Unit 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: C1120 Infiniti indicates Front Left Input ABS Solenoid.
Common causes: Common causes include Faulty ABS Actuator/Electric Unit, ABS Actuator/Electric Unit harness is open or shorted, ABS Actuator/Electric Unit 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 6,212

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 16, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C1120 Infiniti Description

The control unit computes the wheel rotating speed by the signal sent from the sensor. Then it supplies a DC current to the actuator solenoid valve. It also controls ON-OFF operation of the solenoid valve relay and motor relay. If any electrical malfunction should be detected in the system, the control unit causes the warning lamp to turn on. In this condition, the ABS will be deactivated by the control unit, and the vehicle's brake system reverts to normal operation.
The ABS actuator and electric unit (control unit) contains: An electric motor and pump, Two relays, Eight solenoid valves ( each inlet and outlet for LH front, RH front, LH rear, RH rear), and ABS control unit.
These components control the hydraulic circuit that increases, holds or decreases hydraulic pressure to all or individual wheels. The ABS actuator and electric unit (control unit) cannot be disassembled and must be replaced as an assembly.

OBDII Code C1120 Infiniti - Front Left Input ABS Solenoid - AutoCodes.com — C1120 Infiniti Code - Front Left Input ABS Solenoid

What does this mean?

What are the Possible Causes of the DTC C1120 Infiniti?

Faulty ABS Actuator/Electric Unit
ABS Actuator/Electric Unit harness is open or shorted
ABS Actuator/Electric Unit poor electrical connection

How to Fix the DTC C1120 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 does this mean?

Code Tech Notes

The ABS has an electronic control unit to control major functions. The control unit accepts input signals from sensors and controls operation of the actuator. It is also important to check for conventional problems such as air leaks in the booster or lines, lack of brake fluid, or other problems with the brake system.
It is much more difficult to diagnose a problem that occurs intermittently rather than continuously. Most intermittent problems are caused by poor electrical connections or faulty wiring. In this case, careful checking of suspicious circuits may help prevent the replacement of good parts.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1120 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 C1120 Infiniti Code

1. What are the common symptoms of OBDII code C1120 in an Infiniti related to the Front Left Input ABS Solenoid?

The common symptoms include the ABS warning light being illuminated on the dashboard, braking issues, and potential traction control system malfunctions.

2. What are the possible causes of OBDII code C1120 in an Infiniti related to the Front Left Input ABS Solenoid?

Possible causes include a faulty ABS solenoid, damaged wiring or connectors, low brake fluid levels, or issues with the ABS control module.

3. How can I diagnose OBDII code C1120 in an Infiniti related to the Front Left Input ABS Solenoid?

Diagnosis involves using an OBDII scanner to retrieve the specific code, conducting a visual inspection for any visible damage, and testing the ABS solenoid and related components for proper functionality.

4. Can I still drive my Infiniti with OBDII code C1120 related to the Front Left Input ABS Solenoid?

It is not recommended to drive your vehicle with this code present, as it can affect the performance of the ABS system and compromise overall safety.

5. How can I repair OBDII code C1120 in an Infiniti related to the Front Left Input ABS Solenoid?

Repair typically involves replacing the faulty ABS solenoid, repairing any damaged wiring or connectors, ensuring proper brake fluid levels, and clearing the code with an OBDII scanner.

6. Is it possible to reset OBDII code C1120 in an Infiniti related to the Front Left Input ABS Solenoid without repairing the issue?

While you can clear the code temporarily with an OBDII scanner, it is important to address the underlying problem to prevent the code from reappearing and ensure the proper functioning of the ABS system.

7. Are there any preventive maintenance tips to avoid OBDII code C1120 related to the Front Left Input ABS Solenoid in an Infiniti?

Regularly checking and maintaining the brake system, including brake fluid levels, can help prevent issues that may lead to the code. Additionally, driving cautiously can reduce the likelihood of ABS system damage.

8. Can weather conditions or road debris trigger OBDII code C1120 in an Infiniti related to the Front Left Input ABS Solenoid?

Extreme weather conditions or road debris can potentially impact the ABS system and trigger the code. It is important to keep the vehicle well maintained and drive carefully in adverse conditions.

9. How long does it typically take to repair OBDII code C1120 in an Infiniti related to the Front Left Input ABS Solenoid?

The repair time can vary depending on the exact cause of the code and the availability of parts. Generally, it can take a few hours to a day for a professional mechanic to diagnose and repair the issue.

10. Should I attempt to repair OBDII code C1120 related to the Front Left Input ABS Solenoid in an Infiniti myself?

Unless you have experience working on automotive electrical systems and ABS components, it is recommended to have a qualified mechanic diagnose and repair the issue to ensure proper and safe repairs.