C1402 Lexus Code - Front Speed Sensor Left Malfunction
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 Rotor (Front Axle Hub Sub-Assembly Left), Front Speed Sensor Left harness is open or shorted. 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
- C1402 Lexus indicates Front Speed Sensor Left Malfunction.
- Common causes
- Common causes include Faulty Front Speed Sensor Left, Front Speed Sensor Left Rotor (Front Axle Hub Sub-Assembly Left), Front Speed Sensor Left harness is open or shorted.
- 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 C1402 Lexus Description
What are the Possible Causes of the DTC C1402 Lexus?
- Faulty Front Speed Sensor Left
- Front Speed Sensor Left Rotor (Front Axle Hub Sub-Assembly Left)
- Front Speed Sensor Left harness is open or shorted
- Front Speed Sensor Left circuit poor electrical connection
How to Fix the DTC C1402 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
If there is iron powder sticking to the rotor, this will result in a malfunction, so confirm that the rotor is not contaminated with foreign material before replacing the sensor.
Check the speed sensor signal after cleaning or replacement.
On most vehicles, the Front Speed Sensor Rotor is incorporated into the Front Axle Hub Sub-Assembly. If the Speed Sensor Rotor needs to be replaced, replace it together with the Front Axle Hub Sub-Assembly.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1402 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 C1402 Lexus Code
1. What are common symptoms of OBDII code C1402 in a Lexus related to a Front Speed Sensor Left Malfunction?
- Common symptoms include ABS warning light illuminated on the dashboard, traction control system malfunctions, and potential loss of stability control.
2. What can cause the Front Speed Sensor Left Malfunction code C1402 in a Lexus?
- Possible causes include a faulty front left wheel speed sensor, damaged wiring or connectors in the sensor circuit, or issues with the ABS control module.
3. How can I diagnose the Front Speed Sensor Left Malfunction in my Lexus triggering code C1402?
- Diagnose by visually inspecting the front left wheel speed sensor and its wiring, performing a resistance test on the sensor, and using a scan tool to monitor sensor data while driving.
4. Can a dirty or damaged front left wheel speed sensor trigger code C1402 in a Lexus?
- Yes, dirt buildup, debris, or physical damage to the front left wheel speed sensor can lead to erratic readings and trigger the C1402 code in a Lexus.
5. Are there any DIY repair tips for addressing the Front Speed Sensor Left Malfunction code C1402 in a Lexus?
- DIY repair tips include checking and cleaning the sensor area, inspecting wiring for damage, ensuring secure connections, and replacing the front left wheel speed sensor if necessary.
6. Is it safe to continue driving my Lexus with the C1402 code related to the Front Speed Sensor Left Malfunction?
- It is not recommended to drive the vehicle with the C1402 code present, as it can compromise the effectiveness of the ABS and traction control systems, potentially affecting vehicle stability in certain conditions.
7. How can I reset the C1402 code related to the Front Speed Sensor Left Malfunction in my Lexus after making repairs?
- The code can typically be reset using an OBDII scanner tool, which allows for clearing diagnostic trouble codes stored in the vehicle's system.
8. Can extreme weather conditions affect the Front Speed Sensor Left Malfunction code C1402 in a Lexus?
- Yes, extreme cold or heat can impact sensor performance and trigger the C1402 code, so it's important to ensure the sensor is properly functioning in all weather conditions.
9. Are there any recalls or technical service bulletins related to the C1402 Lexus code for Front Speed Sensor Left Malfunction?
- It's recommended to check with a Lexus dealership or visit the manufacturer's website to see if there are any relevant recalls or technical service bulletins addressing the C1402 code in your specific Lexus model.
10. How much does it typically cost to repair the Front Speed Sensor Left Malfunction triggering code C1402 in a Lexus?
- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor, including sensor replacement or wiring repairs.
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