C1403 Code - Rear Speed Sensor Right Malfunction
Quick Answer
The C1403 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, Corrosion in the sensor connections. 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 indicates Rear Speed Sensor Right Malfunction.
- Common causes
- Common causes include Faulty rear speed sensor, Damaged wiring or connectors, Corrosion in the sensor connections.
- 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 C1403 Description
The C1403 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). This information is used to determine if a wheel is locking up during braking or if there is a loss of traction.
Common Causes of C1403
- Faulty rear speed sensor
- Damaged wiring or connectors
- Corrosion in the sensor connections
- Incorrect sensor mounting position
- Electronic control unit (ECU) malfunction
Symptoms of C1403
- ABS warning light illuminated on the dashboard
- Traction control system light is on
- Decreased braking performance
- Vehicle stability control system may be disabled
- Tires skidding or slipping during braking
How to Fix C1403
- Diagnose the issue by using a scan tool to confirm the C1403 code and identify the specific rear speed sensor that is malfunctioning.
- Inspect the wiring and connectors for any damage or corrosion. Repair or replace as necessary.
- Check the mounting position of the speed sensor and adjust if needed.
- Replace the faulty rear speed sensor with a new one.
- Clear the code and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix C1403
The typical repair costs for a rear speed sensor malfunction can range from $150 to $300, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is recommended to check local rates for a more accurate estimate. Keep in mind that rates at dealerships or in metropolitan areas may be higher, while independent shops often charge less.
Tech Notes for C1403
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Code C1403 Information for Specific Makes
- C1403 Lexus — Rear Speed Sensor Right Malfunction
- C1403 Scion — Rear Speed Sensor Right Malfunction
- C1403 Toyota — Rear Speed Sensor Right Malfunction
Frequently Asked Questions about C1403 Code
1. What does the OBDII code C1403 mean?
C1403 indicates a malfunction in the rear speed sensor on the right side, which is responsible for monitoring wheel speed and providing data to the ABS and traction control systems.
2. What are the common symptoms of the C1403 code?
Symptoms may include an illuminated ABS or traction control warning light, poor braking performance, loss of traction control functionality, or erratic speedometer readings.
3. What causes the C1403 code to appear?
Common causes include a faulty rear right wheel speed sensor, damaged sensor wiring or connectors, a dirty or misaligned sensor, or issues with the ABS control module.
4. Can I drive with the C1403 code?
While driving is possible, it is not recommended as the ABS and traction control systems may be compromised, increasing the risk of skidding or reduced braking effectiveness.
5. How do I diagnose a C1403 code?
Start by inspecting the rear right wheel speed sensor and its wiring for damage or corrosion. Use a multimeter to check sensor resistance or a scan tool to monitor sensor data in real time.
6. How can I fix the C1403 code?
Repairs may include replacing the faulty wheel speed sensor, cleaning or realigning the sensor, repairing damaged wiring or connectors, or reprogramming the ABS module if needed.
7. How much does it cost to fix a C1403 code?
Costs vary, but replacing a wheel speed sensor typically ranges from $100 to $300, including parts and labor. Wiring repairs or ABS module replacements may cost more.
8. Can a dirty sensor cause a C1403 code?
Yes, debris or dirt on the sensor or tone ring can interfere with the sensor's ability to read wheel speed accurately, triggering the C1403 code.
9. Will clearing the C1403 code solve the issue?
Clearing the code may temporarily turn off the warning light, but the underlying problem must be diagnosed and fixed to prevent the code from returning.
10. Is the C1403 code specific to certain vehicles?
The C1403 code is most commonly associated with vehicles equipped with ABS systems and may vary slightly by manufacturer. Always consult your vehicle’s service manual for specifics.
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