C1406 Lexus Code - Open or Short in Front Speed Sensor Left 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 Left, Front Speed Sensor Left harness is open or shorted, Front Speed Sensor Left 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
- C1406 Lexus indicates Open or Short in Front Speed Sensor Left Circuit.
- Common causes
- Common causes include Faulty Front Speed Sensor Left, Front Speed Sensor Left harness is open or shorted, Front Speed Sensor Left 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 C1406 Lexus Description
What are the Possible Causes of the DTC C1406 Lexus?
- Faulty Front Speed Sensor Left
- Front Speed Sensor Left harness is open or shorted
- Front Speed Sensor Left circuit poor electrical connection
- Faulty Skid Control ECU (Brake Actuator Assembly)
How to Fix the DTC C1406 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1406 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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Frequently Asked Questions about C1406 Lexus Code
What does the OBDII code C1406 indicate for my Lexus?
C1406 indicates an open or short circuit in the front speed sensor left circuit, affecting the vehicle's anti-lock brake system (ABS).
What symptoms might I experience if my Lexus has the C1406 code?
Common symptoms include ABS warning light illumination, traction control issues, and potentially reduced braking performance.
What could cause the C1406 code to appear in my Lexus?
Causes may include damaged wiring, a faulty speed sensor, poor electrical connections, or issues with the ABS control module.
How can I diagnose the C1406 code in my Lexus?
You can start by visually inspecting the wiring and connectors for damage, testing the speed sensor's resistance, and checking for proper voltage and ground at the sensor.
Is it safe to drive my Lexus with the C1406 code?
While it may be safe to drive, the ABS and traction control may not function properly, increasing the risk of losing control in slippery conditions.
What are some common repairs for the C1406 code?
Common repairs include replacing the speed sensor, repairing damaged wiring, cleaning or replacing corroded connectors, or replacing the ABS control module if necessary.
How can I prevent the C1406 code from reoccurring?
Regularly inspect the wiring and connectors for wear or damage, and maintain the ABS system to ensure all components are functioning correctly.
Can I reset the C1406 code after repairs?
Yes, you can reset the code using an OBDII scanner after completing the repairs, but ensure the issue is fully resolved to prevent the code from returning.
Will clearing the C1406 code fix the underlying problem?
No, clearing the code will not fix the problem. It is essential to diagnose and repair the root cause before resetting the code.
Discuss the causes and fixes for C1406 Lexus OBDII Code
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