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AutoCodes – Toyota – C1408 Toyota

C1408 Toyota Code - Open Or Short In Rear 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 Rear Speed Sensor Left, Rear Speed Sensor Left harness is open or shorted, Rear 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
C1408 Toyota indicates Open Or Short In Rear Speed Sensor Left Circuit.
Common causes
Common causes include Faulty Rear Speed Sensor Left, Rear Speed Sensor Left harness is open or shorted, Rear 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.
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Code Popularity 36,053
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Jan 24, 2023
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Code C1408 Toyota 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 C1408 Toyota - Open Or Short In Rear Speed Sensor Left Circuit - AutoCodes.com
C1408 Toyota Code - Open Or Short In Rear Speed Sensor Left Circuit
What does this mean?

What are the Possible Causes of the DTC C1408 Toyota?

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

How to Fix the DTC C1408 Toyota?

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 C1408 Toyota 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 C1408 Toyota code?

Need more information on how to fix the C1408 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1408 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

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 C1408 Toyota Code

1. What are the common symptoms of OBDII code C1408 in a Toyota related to an open or short in the rear speed sensor left circuit?

The common symptoms include ABS warning light illuminated on the dashboard, traction control system malfunctioning, and potential loss of stability control.

2. What are the possible causes of OBDII code C1408 in a Toyota indicating an open or short in the rear speed sensor left circuit?

Possible causes include damaged wiring or connectors, a faulty rear speed sensor, corrosion in the circuit, or a problem with the ABS module.

3. How can I diagnose the issue related to OBDII code C1408 in a Toyota?

Diagnosing the problem involves inspecting the wiring and connectors for visible damage, testing the rear speed sensor for proper functionality, checking for corrosion, and using a scan tool to retrieve specific error codes.

4. Can I continue driving my Toyota with OBDII code C1408 present?

While the vehicle may still be operable, it is not recommended to drive with this code present as it affects important safety systems like ABS and traction control. It's best to address the issue promptly.

5. How can I repair OBDII code C1408 in a Toyota due to an open or short in the rear speed sensor left circuit?

Repair options may include repairing or replacing damaged wiring, cleaning or replacing connectors, replacing the rear speed sensor if faulty, addressing any corrosion, and resetting the fault codes.

6. Is it possible to reset OBDII code C1408 in a Toyota without fixing the underlying issue?

Resetting the code without addressing the underlying problem will likely result in the code reappearing once the system detects the issue again. It's crucial to fix the root cause of the problem.

7. Can weather conditions impact the occurrence of OBDII code C1408 in a Toyota?

Extreme weather conditions, such as excessive moisture or extreme temperatures, can potentially exacerbate issues related to an open or short in the rear speed sensor left circuit, leading to the triggering of this fault code.

8. Will fixing OBDII code C1408 in a Toyota require specialized tools or expertise?

While basic automotive repair knowledge is helpful, diagnosing and repairing issues related to this fault code may require specialized tools like a multimeter, wiring diagrams, and possibly a scan tool to reset the codes.

9. How long does it typically take to repair OBDII code C1408 in a Toyota?

The repair time can vary depending on the exact cause of the issue and the expertise of the person performing the repairs. It may take anywhere from a few hours to a full day to diagnose and fix the problem.

10. Is it recommended to seek professional help for addressing OBDII code C1408 in a Toyota?

If you're not familiar with automotive diagnostics and repairs, it's advisable to seek professional help from a qualified mechanic or technician to accurately diagnose and resolve the issue related to this fault code.

Discuss the causes and fixes for C1408 Toyota OBDII Code

Submit a New Comment

  • The description of the C1408 code refers to an open circuit in the REAR speed sensor left circuit. However, your possible causes refer to the FRONT speed sensors. Is this an error in your potential causes? Thanks

    Reply to Comment
  • Is this an error in your potential causes?

    Yes

    We have corrected the information.

    Thank you for letting us know.

    Reply to Comment

  • fault code C1408 - car start then stop so change Rear left speed sensor

    Reply to Comment

  • The start and then stop may not be related to the C1408 code, I have never seen that code causing those symptoms. Do you have any other codes?

    Question: https://www.autocodes.com/c...

    Reply to Comment
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