AutoCodesLexus – C1AE4 Lexus

C1AE4 Lexus Code - Ultrasonic Sensor Front Right Corner Sensor

Quick Answer

The No. Common causes include Faulty No, 1 Ultrasonic Sensor (Front Right [RH] Corner Sensor), No. 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
C1AE4 Lexus indicates Ultrasonic Sensor Front Right Corner Sensor.
Common causes
Common causes include Faulty No, 1 Ultrasonic Sensor (Front Right [RH] Corner Sensor), No.
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 Popularity 511
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 14, 2023
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Code C1AE4 Lexus Description

The No. 1 Ultrasonic Sensor (Front Right [RH] Corner Sensor) is installed on the front bumper. The ECU detects obstacles based on signals received from the No. 1 Ultrasonic Sensor (Front Right [RH] Corner Sensor). If the No. 1 Ultrasonic Sensor (Front Right [RH] Corner Sensor) has an open circuit or other malfunction, it will not function normally.
OBDII Code C1AE4 Lexus - Ultrasonic Sensor Front Right Corner Sensor - AutoCodes.com
C1AE4 Lexus Code - Ultrasonic Sensor Front Right Corner Sensor

What are the Possible Causes of the DTC C1AE4 Lexus?

  • Faulty No. 1 Ultrasonic Sensor (Front Right [RH] Corner Sensor)
  • No. 1 Ultrasonic Sensor harness is open or shorted
  • No. 1 Ultrasonic Sensor circuit poor electrical connection
  • Faulty Clearance Warning ECU Assembly

How to Fix the DTC C1AE4 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1AE4 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.

Need more information about the C1AE4 Lexus code?

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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 C1AE4 Lexus Code

1. What does the OBDII code C1AE4 mean on a Lexus?

C1AE4 indicates a malfunction in the front right corner ultrasonic sensor, which is part of the parking assist system.

2. What are the common symptoms of the C1AE4 code in a Lexus?

Common symptoms include parking assist warnings on the dashboard, the system not detecting objects properly, or the parking assist system being disabled.

3. What causes the C1AE4 code to appear?

Possible causes include a dirty or obstructed sensor, a damaged sensor, faulty wiring or connections, or a malfunction in the parking assist control module.

4. Can I drive my Lexus with the C1AE4 code present?

Yes, you can drive the vehicle, but the parking assist system may not function correctly, increasing the risk of low-speed collisions.

5. How do I diagnose the C1AE4 code in my Lexus?

Inspect the front right corner ultrasonic sensor for dirt, damage, or obstructions. Check the wiring and connections to the sensor and scan the system for any additional codes.

6. How can I fix the C1AE4 code on my Lexus?

Clean the sensor, repair or replace damaged wiring, or replace the sensor if it’s faulty. If the issue persists, have the parking assist control module inspected.

7. How much does it cost to repair the C1AE4 code on a Lexus?

Costs vary but typically range from $100 to $300 for cleaning or sensor replacement. Wiring repairs or control module issues could be more expensive.

8. Can a dirty sensor trigger the C1AE4 code in a Lexus?

Yes, dirt, debris, or ice obstructing the sensor can lead to this code being triggered.

9. Do I need a professional to fix the C1AE4 code?

While simple issues like cleaning the sensor can be done at home, diagnosing and repairing wiring or control module problems may require professional assistance.

10. How can I prevent the C1AE4 code from occurring again?

Regularly clean the ultrasonic sensors and avoid physical damage to the bumper area where the sensors are located.

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