C1AA5 Code - Yaw Rate Sensor Power Supply Voltage Circuit
Quick Answer
For vehicles with Lane Departure Alert System: The Yaw Rate Sensor is integrated with Airbag Sensor Assembly. Common causes include Faulty Vehicle Stability Control System, Faulty Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly) (For Forward Recognition Camera System), Faulty Forward Recognition Camera (For vehicles with Forward Recognition Camera System). 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
- C1AA5 indicates Yaw Rate Sensor Power Supply Voltage Circuit.
- Common causes
- Common causes include Faulty Vehicle Stability Control System, Faulty Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly) (For Forward Recognition Camera System), Faulty Forward Recognition Camera (For vehicles with Forward Recognition Camera System).
- 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 C1AA5 Description
For vehicles with Forward Recognition Camera System: The Forward Recognition Camera receives vehicle stability signals from the Yaw Rate Sensor Assembly. If the Yaw Rate Sensor Assembly detects an abnormal Yaw Rate Sensor signal or Yaw Rate Sensor Assembly power supply voltage, it informs the Forward Recognition Camera via CAN communication, and DTC C1AA4 or C1AA5 is stored.
For vehicles with Lane Departure Alert System (W/ Steering Control): The Forward Recognition Camera receives vehicle stability signals from the Yaw Rate Sensor Assembly. If the Yaw Rate Sensor Assembly detects an abnormal Yaw Rate Sensor signal or Yaw Rate Sensor Assembly power supply voltage, it informs the Forward Recognition Camera via CAN communication, and DTC C1AA4 or C1AA5 is stored.
What are the Possible Causes of the DTC C1AA5?
- Faulty Vehicle Stability Control System
- Faulty Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly) (For Forward Recognition Camera System)
- Faulty Forward Recognition Camera (For vehicles with Forward Recognition Camera System)
- Faulty Lane Departure Warning Camera (For vehicles with Lane Departure Alert System)
How to Fix the DTC C1AA5?
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 C1AA5 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
- C1AA5 Lexus — Yaw Rate Sensor Power Supply Voltage Circuit
- C1AA5 Toyota — Yaw Rate Sensor Power Supply Voltage Circuit
Frequently Asked Questions about C1AA5 Code
What does the OBDII code C1AA5 mean?
1. C1AA5 refers to an issue with the Yaw Rate Sensor Power Supply Voltage Circuit, indicating that the sensor may not be receiving the proper voltage to function correctly. 2.
What are the common symptoms of a C1AA5 code?
Symptoms may include the illumination of the ABS or traction control warning light, reduced stability control performance, or erratic handling during cornering. 3.
What causes the C1AA5 code to appear?
The code can be triggered by a faulty yaw rate sensor, damaged wiring or connectors, a weak battery, or an issue with the power supply to the sensor. 4.
Can a weak battery cause the C1AA5 code?
Yes, a weak or failing battery can cause insufficient voltage to the yaw rate sensor, leading to the C1AA5 code. 5.
How is the C1AA5 code diagnosed?
A technician will inspect the yaw rate sensor, check the wiring and connectors, measure the power supply voltage, and use a scan tool to monitor sensor data for abnormalities. 6.
Is it safe to drive with the C1AA5 code?
Driving may be less safe as stability control and traction control systems could be compromised, especially in slippery or sharp-turning conditions. 7.
How do you fix the C1AA5 code?
Repairs may involve replacing the yaw rate sensor, repairing damaged wiring or connectors, or addressing power supply issues such as a failing battery or alternator. 8.
Can a blown fuse cause the C1AA5 code?
Yes, a blown fuse in the circuit powering the yaw rate sensor can disrupt its voltage supply and trigger the code. 9.
How much does it cost to repair the C1AA5 code?
Repair costs can vary but typically range from $150 to $500, depending on whether the issue is with the sensor, wiring, or power supply components. 10.
Can a DIYer fix the C1AA5 code?
A skilled DIYer with proper tools, such as a multimeter and a scan tool, may be able to diagnose and repair simpler issues like loose connections or blown fuses. However, complex repairs may require professional expertise.
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