C1A46 Code - Yaw Rate Sensor
Quick Answer
The Driving Support ECU Assembly receives Airbag Sensor Assembly signals from the Airbag Sensor Assembly and Skid Control ECU (Brake Actuator Assembly) via CAN communication. Common causes include Faulty Vehicle stability control system, Faulty Skid Control ECU (Brake Actuator Assembly), Faulty Driving Support ECU Assembly. 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
- C1A46 indicates Yaw Rate Sensor.
- Common causes
- Common causes include Faulty Vehicle stability control system, Faulty Skid Control ECU (Brake Actuator Assembly), Faulty Driving Support ECU Assembly.
- 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 C1A46 Description
What are the Possible Causes of the DTC C1A46?
- Faulty Vehicle stability control system
- Faulty Skid Control ECU (Brake Actuator Assembly)
- Faulty Driving Support ECU Assembly
- Faulty Airbag Sensor Assembly
How to Fix the DTC C1A46?
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 C1A46 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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Information for Specific Makes
- C1A46 Lexus — Yaw Rate Sensor
- C1A46 Toyota — Yaw Rate Sensor
Frequently Asked Questions about C1A46 Code
1. What does OBDII code C1A46 mean?
C1A46 indicates an issue with the yaw rate sensor, which measures the vehicle's rotational movement to assist stability control systems.
2. What are the common symptoms of code C1A46?
Symptoms may include the stability control or traction control warning light turning on, poor vehicle handling, or the stability control system not functioning properly.
3. What causes the C1A46 code to appear?
Common causes include a faulty yaw rate sensor, wiring issues such as damaged or corroded connectors, or a malfunction in the Electronic Control Unit (ECU).
4. Can I drive with the C1A46 code active?
While the vehicle may still be drivable, it’s not recommended as stability and traction control systems may be compromised, increasing the risk of losing control in certain situations.
5. How do I diagnose the C1A46 code?
Diagnosis typically involves scanning the vehicle with an OBDII tool, checking for related codes, inspecting the yaw rate sensor and its wiring, and testing the sensor’s output.
6. How do I fix the C1A46 code?
Repairs may include replacing the yaw rate sensor, repairing or replacing damaged wiring, or reprogramming or replacing the ECU if it’s found to be faulty.
7. Where is the yaw rate sensor located?
The yaw rate sensor is usually located under the center console, beneath the dashboard, or near the vehicle’s center of gravity.
8. How much does it cost to fix code C1A46?
Repair costs can vary, but replacing a yaw rate sensor typically ranges from $200 to $600, including parts and labor.
9. Can a weak battery cause the C1A46 code?
Yes, a weak or failing battery can cause voltage irregularities that may trigger the C1A46 code or other sensor-related issues.
10. Do I need to recalibrate the system after replacing the yaw rate sensor?
Yes, after replacing the yaw rate sensor, the stability control system may need to be recalibrated using a diagnostic tool to ensure proper functioning.
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