AutoCodes – Generic – C1104

C1104 Code - Front Left Sensor 1

Quick Answer

When the sensor rotor rotates, the magnetic field changes. Common causes include ABS Wheel Sensor not properly installed, ABS Wheel Sensor rotor or encoder damaged, ABS Wheel Sensor rotor loose on axle. 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: C1104 indicates Front Left Sensor 1.
Common causes: Common causes include ABS Wheel Sensor not properly installed, ABS Wheel Sensor rotor or encoder damaged, ABS Wheel Sensor rotor loose on axle.
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 18,689

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 C1104 Description

When the sensor rotor rotates, the magnetic field changes. It converts the magnetic field changes to current signals (rectangular waves) and transmits them to the Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit). The ABS Actuator and Electric Unit monitor the ABS Wheel Sensor. The ABS Actuator and Electric Unit sets the OBDII code when the ABS Wheel Sensor is not to factory specifications. The Diagnostic Trouble Code (DTC) will be set when the circuit of the front Left wheel sensor is open or shorted or the sensor power voltage is unusual.

OBDII Code C1104 - Front Left Sensor 1 - AutoCodes.com — C1104 Code - Front Left Sensor 1

What does this mean?

What are the Possible Causes of the DTC C1104?

ABS Wheel Sensor not properly installed
ABS Wheel Sensor rotor or encoder damaged
ABS Wheel Sensor rotor loose on axle
Faulty ABS Wheel Sensor
ABS Wheel Sensor harness is open or shorted
ABS Wheel Sensor circuit poor electrical connection
Faulty Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit)

How to Fix the DTC C1104?

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 C1104 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 C1104 code?

Need more information on how to fix the C1104 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1104 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1104 Infiniti — Front Left Sensor 1
C1104 Nissan — Front Left Sensor 1

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 C1104 Code

What does the OBDII code C1104 indicate?

The OBDII code C1104 indicates a malfunction related to the front left wheel speed sensor or its circuit, which can affect the vehicle's traction control and anti-lock braking systems.

What are common symptoms of a C1104 code?

Common symptoms include the illumination of the ABS warning light, traction control light, and potential issues with braking performance or loss of traction control functionality.

What can cause a C1104 code to trigger?

Causes may include a faulty front left wheel speed sensor, damaged wiring or connectors, or issues with the ABS control module.

How can I diagnose a C1104 code?

To diagnose a C1104 code, inspect the front left wheel speed sensor and its wiring for damage, check the sensor's resistance and output with a multimeter, and use a scan tool to monitor live data.

Is it safe to drive with a C1104 code?

While it may be safe to drive, the vehicle may experience reduced braking performance and traction control, so it's advisable to address the issue promptly to ensure safety.

What are some common repair solutions for a C1104 code?

Common repairs include replacing a faulty front left wheel speed sensor, repairing damaged wiring or connectors, or reprogramming or replacing the ABS module if necessary.

How much does it typically cost to fix a C1104 code?

Repair costs can vary widely but generally range from $100 to $400, depending on whether the issue is a simple wiring fix or a sensor replacement.

Can I reset the C1104 code myself?

Yes, you can reset the C1104 code using an OBDII scanner, but it's important to fix the underlying issue to prevent the code from returning.

Will a C1104 code affect my vehicle's performance?

Yes, a C1104 code can affect the performance of your vehicle, particularly in terms of braking effectiveness and stability control, which can compromise safety.