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C1403 Toyota Code - Rear Speed Sensor Right Malfunction

Quick Answer

The C1403 Toyota code indicates a malfunction with the rear speed sensor on the right side of the vehicle. Common causes include Faulty rear speed sensor, Damaged wiring or connectors leading to the speed sensor, Corrosion or debris affecting the sensor's functionality. 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
C1403 Toyota indicates Rear Speed Sensor Right Malfunction.
Common causes
Common causes include Faulty rear speed sensor, Damaged wiring or connectors leading to the speed sensor, Corrosion or debris affecting the sensor's functionality.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code C1403 Toyota Description

The C1403 Toyota code indicates a malfunction with the rear speed sensor on the right side of the vehicle. The speed sensor is a crucial component of the vehicle's anti-lock braking system (ABS) and traction control system. The sensor is responsible for monitoring the speed of the wheel and sending this information to the vehicle's electronic control unit (ECU). If the ECU detects that the rear speed sensor on the right side is not functioning properly or sending inaccurate data, it will trigger the C1403 trouble code.

OBDII Code C1403 Toyota - Rear Speed Sensor Right Malfunction
C1403 Toyota Code - Rear Speed Sensor Right Malfunction

Common Causes of C1403 Toyota

  1. Faulty rear speed sensor
  2. Damaged wiring or connectors leading to the speed sensor
  3. Corrosion or debris affecting the sensor's functionality
  4. Issues with the ECU receiving and interpreting sensor data
  5. Mechanical damage to the wheel bearing or hub assembly

Symptoms of C1403 Toyota

  1. Illuminated ABS warning light on the dashboard
  2. Traction control system warning light activated
  3. Inconsistent or erratic braking behavior
  4. Reduced stability and traction on slippery roads
  5. Uneven or jerky acceleration

How to Fix C1403 Toyota

  1. Diagnose the issue by using a diagnostic scanner to retrieve the trouble code and inspect the rear speed sensor.
  2. Inspect the wiring and connectors leading to the speed sensor for any damage or corrosion.
  3. Clean the sensor and surrounding area to remove any debris or buildup that may be affecting its performance.
  4. Replace the rear speed sensor if it is determined to be faulty or damaged.
  5. Clear the trouble code and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix C1403 Toyota

The typical repair costs for addressing a C1403 Toyota code can range from $150 to $300, depending on the specific cause of the issue and the cost of the replacement parts. This estimate includes the cost of the rear speed sensor and any additional labor required for diagnostics and installation. It is important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also impact the total repair cost. It is recommended to obtain a detailed quote from a trusted auto repair shop to get a more accurate estimate for this repair.

What does this mean?

Tech Notes for C1403 Toyota

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.











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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 C1403 Toyota Code

1. What are the common symptoms of OBDII code C1403 in a Toyota, indicating a Rear Speed Sensor Right Malfunction?

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

2. What typically causes the Rear Speed Sensor Right Malfunction (code C1403) in a Toyota?

The most common causes are a faulty rear speed sensor on the right side, damaged wiring or connectors related to the sensor, or a problem with the ABS control module.

3. How can I diagnose the Rear Speed Sensor Right Malfunction in my Toyota when OBDII code C1403 is triggered?

Diagnosis involves inspecting the rear speed sensor and its wiring for any visible damage, testing the sensor's resistance, and using a scan tool to monitor sensor data for irregularities.

4. Can a DIY enthusiast repair the Rear Speed Sensor Right Malfunction (code C1403) in a Toyota?

Yes, if the issue is with the sensor itself or its wiring, it may be possible to replace the sensor or repair the wiring as a DIY project. However, more complex issues with the ABS control module may require professional assistance.

5. What are some tips for repairing the Rear Speed Sensor Right Malfunction in a Toyota to clear OBDII code C1403?

Ensure the sensor and its wiring are securely in place and free of damage. Clean any dirt or debris around the sensor area, and carefully follow the manufacturer's repair instructions.

6. Is it safe to continue driving with the Rear Speed Sensor Right Malfunction triggering OBDII code C1403 in a Toyota?

It is not recommended to drive the vehicle with this issue, as it can affect the performance of the ABS and traction control systems, potentially compromising safety in certain driving conditions.

7. How much does it typically cost to repair the Rear Speed Sensor Right Malfunction in a Toyota causing OBDII code C1403?

The cost of repair can vary depending on the exact cause of the issue, but it generally ranges from $100 to $300 for parts and labor if a sensor replacement or minor wiring repair is needed.

8. Can weather conditions or road debris trigger the Rear Speed Sensor Right Malfunction (code C1403) in a Toyota?

Yes, extreme weather conditions, road debris, or water exposure can sometimes lead to sensor malfunctions or damage, triggering the C1403 diagnostic trouble code.

9. Will resetting the OBDII system clear the Rear Speed Sensor Right Malfunction code C1403 in a Toyota?

While resetting the system may temporarily clear the code, it will likely reappear if the underlying issue causing the malfunction is not addressed and repaired properly.

10. How soon should I address the Rear Speed Sensor Right Malfunction in my Toyota after OBDII code C1403 is detected?

It is recommended to address the issue promptly to prevent further complications with the ABS and traction control systems, ensuring the vehicle's safety and performance are not compromised.

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