AutoCodes – Lexus – C1405 Lexus

C1405 Lexus Code - Open or Short in Front Speed Sensor Right Circuit

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 Front Speed Sensor Right, Front Speed Sensor Right harness is open or shorted, Front Speed Sensor Right 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: C1405 Lexus indicates Open or Short in Front Speed Sensor Right Circuit.
Common causes: Common causes include Faulty Front Speed Sensor Right, Front Speed Sensor Right harness is open or shorted, Front Speed Sensor Right 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.

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Code Popularity 9,354

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 23, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C1405 Lexus 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 C1405 Lexus - Open or Short in Front Speed Sensor Right Circuit - AutoCodes.com — C1405 Lexus Code - Open or Short in Front Speed Sensor Right Circuit

What does this mean?

What are the Possible Causes of the DTC C1405 Lexus?

Faulty Front Speed Sensor Right
Front Speed Sensor Right harness is open or shorted
Front Speed Sensor Right circuit poor electrical connection
Faulty Skid Control ECU (Brake Actuator Assembly)

How to Fix the DTC C1405 Lexus?

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

Start by checking passenger side wheel speed sensor for physical damage.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1405 Lexus 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 C1405 Lexus Code

1. What does the OBDII code C1405 mean on a Lexus?

Code C1405 indicates an open or short circuit in the front speed sensor right circuit, which affects the ABS system.

2. What are the common symptoms of code C1405 in a Lexus?

Symptoms include ABS warning lights, reduced braking performance, and possible loss of traction or stability control features.

3. What causes the C1405 code on a Lexus?

Common causes include a damaged front right speed sensor, corroded or broken wiring, loose electrical connections, or a faulty ABS module.

4. How do I diagnose the C1405 code on a Lexus?

Start by visually inspecting the front right speed sensor, wiring harness, and connectors for damage or corrosion, then test the sensor with a multimeter and check for continuity.

5. Can I drive my Lexus with the C1405 code active?

While the vehicle may still be drivable, the ABS system may not function correctly, which can compromise braking safety in slippery conditions.

6. How do I fix the C1405 code on a Lexus?

Repair or replace the damaged front right speed sensor, fix any broken or corroded wiring, and ensure all connections are secure.

7. How much does it cost to fix code C1405 on a Lexus?

Repair costs vary, but replacing a speed sensor typically ranges from $100 to $300, depending on labor and parts.

8. Will clearing the code C1405 fix the problem permanently?

Clearing the code without addressing the underlying issue will not fix the problem, and the code will likely return.

9. Can a faulty ABS module cause code C1405 in a Lexus?

Yes, though less common, a malfunctioning ABS module can contribute to this code if the module cannot properly interpret sensor signals.

10. How can I prevent code C1405 from reoccurring in my Lexus?

Regularly inspect the ABS system components for wear or damage, keep the wiring harness clean and secure, and avoid driving in conditions that may expose the sensor to excessive moisture or debris.