AutoCodes – Toyota – C1404 2018 Toyota RAV4

C1404 2018 Toyota RAV4 Code - Rear Speed Sensor Left Malfunction

Quick Answer

The speed sensor detects the wheel speed and sends the appropriate signals to the Skid Control ECU (Brake Actuator Assembly). Common causes include Faulty Rear Speed Sensor Left (Rear Axle Hub and Bearing Assembly Left), Rear Speed Sensor Left Rotor (Rear Axle Hub and Bearing Assembly Left), Rear Speed Sensor Left harness is open or shorted. 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: C1404 2018 Toyota RAV4 indicates Rear Speed Sensor Left Malfunction.
Common causes: Common causes include Faulty Rear Speed Sensor Left (Rear Axle Hub and Bearing Assembly Left), Rear Speed Sensor Left Rotor (Rear Axle Hub and Bearing Assembly Left), Rear Speed Sensor Left harness is open or shorted.
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 3,083

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 Jan 19, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C1404 2018 Toyota RAV4 Description

The speed sensor detects the wheel speed and sends the appropriate signals to the Skid Control ECU (Brake Actuator Assembly). These signals are used for Anti-Lock Brake System (ABS) control. Speed sensor rotors have rows of alternating N and S magnetic poles, and their magnetic fields change when the rotors turn. Each speed sensor detects that magnetic change and sends a pulse signal to the Skid Control ECU (Brake Actuator Assembly).

OBDII Code C1404 2018 Toyota RAV4 - Rear Speed Sensor Left Malfunction - AutoCodes.com — C1404 2018 Toyota RAV4 Code - Rear Speed Sensor Left Malfunction

What does this mean?

What are the Possible Causes of the DTC C1404 2018 Toyota RAV4?

Faulty Rear Speed Sensor Left (Rear Axle Hub and Bearing Assembly Left)
Rear Speed Sensor Left Rotor (Rear Axle Hub and Bearing Assembly Left)
Rear Speed Sensor Left harness is open or shorted
Rear Speed Sensor Left circuit poor electrical connection

How to Fix the DTC C1404 2018 Toyota RAV4?

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

Because the Rear Axle Hub and Bearing Assembly cannot be disassembled, if the Rear Speed Sensor needs replacement, replace the Rear Axle Hub and Bearing Assembly.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1404 2018 Toyota RAV4 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 C1404 2018 Toyota RAV4 code?

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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 C1404 2018 Toyota RAV4 Code

1. What are the common symptoms of OBDII code C1404 in a 2018 Toyota RAV4?

- Common symptoms include the ABS warning light turning on, traction control system malfunctions, and possible issues with the vehicle's stability control.

2. What does the OBDII code C1404 indicate in a 2018 Toyota RAV4?

- The code specifically points to a malfunction in the rear speed sensor on the left side of the vehicle.

3. What are the possible causes of the Rear Speed Sensor Left Malfunction (C1404) in a 2018 Toyota RAV4?

- Potential causes include a faulty speed sensor, damaged wiring or connectors, sensor misalignment, or issues with the sensor's signal.

4. How can I diagnose the Rear Speed Sensor Left Malfunction (C1404) in my 2018 Toyota RAV4?

- Diagnosing the issue involves inspecting the speed sensor and its connections, checking for any visible damage, and using a diagnostic scanner to read the specific trouble code.

5. Can I continue driving my 2018 Toyota RAV4 with the C1404 code triggered?

- It is not recommended to drive the vehicle with the C1404 code active, as it can affect the proper functioning of the ABS, traction control, and stability control systems.

6. How can I repair the Rear Speed Sensor Left Malfunction (C1404) in my 2018 Toyota RAV4?

- Repair typically involves replacing the faulty speed sensor, repairing or replacing damaged wiring, ensuring proper sensor alignment, and clearing the trouble code with a diagnostic tool.

7. Can weather or road conditions trigger the C1404 code in a 2018 Toyota RAV4?

- Extreme weather conditions or driving on rough terrain can potentially impact the speed sensor, leading to the triggering of the C1404 trouble code.

8. Is it advisable to reset the OBDII code C1404 in a 2018 Toyota RAV4 without addressing the underlying issue?

- It is not recommended to simply reset the code without addressing the root cause, as the problem may persist and affect the vehicle's safety systems.

9. How much does it typically cost to repair the Rear Speed Sensor Left Malfunction (C1404) in a 2018 Toyota RAV4?

- The cost of repair can vary depending on the extent of the issue, but replacing a speed sensor and addressing related wiring problems may range from $200 to $500 at a repair shop.

10. Can a DIY enthusiast with basic automotive knowledge fix the C1404 code in a 2018 Toyota RAV4?

- While some DIYers may be able to replace a speed sensor or check wiring connections, it's recommended to consult a professional if unsure about diagnosing or repairing the issue to ensure proper function and safety.