AutoCodes – Lexus – C1AE7 Lexus

C1AE7 Lexus Code - Ultrasonic Sensor Rear Left Center Sensor

Quick Answer

The No. Common causes include Faulty No, 4 Ultrasonic Sensor (Rear Left [LH] Center 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: C1AE7 Lexus indicates Ultrasonic Sensor Rear Left Center Sensor.
Common causes: Common causes include Faulty No, 4 Ultrasonic Sensor (Rear Left [LH] Center 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 686

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 14, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1AE7 Lexus Description

The No. 4 Ultrasonic Sensor (Rear Left [LH] Center Sensor) is installed on the rear bumper. The ECU detects obstacles based on signals received from the No. 4 Ultrasonic Sensor (Rear Left [LH] Center Sensor). If the No. 4 Ultrasonic Sensor (Rear Left [LH] Center Sensor) has an open circuit or other malfunction, it will not function normally.

OBDII Code C1AE7 Lexus - Ultrasonic Sensor Rear Left Center Sensor - AutoCodes.com — C1AE7 Lexus Code - Ultrasonic Sensor Rear Left Center Sensor

What does this mean?

What are the Possible Causes of the DTC C1AE7 Lexus?

Faulty No. 4 Ultrasonic Sensor (Rear Left [LH] Center Sensor)
No. 4 Ultrasonic Sensor harness is open or shorted
No. 4 Ultrasonic Sensor circuit poor electrical connection
Faulty Clearance Warning ECU Assembly

How to Fix the DTC C1AE7 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 C1AE7 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 C1AE7 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 C1AE7 Lexus Code

1. What does the OBDII code C1AE7 mean on a Lexus?

C1AE7 indicates an issue with the ultrasonic rear left center sensor, which is part of the parking assist system.

2. What are the common symptoms of code C1AE7 in a Lexus?

Symptoms may include parking assist not working, an audible warning or error message on the dashboard, or inaccurate distance detection.

3. What causes the C1AE7 code to appear?

The code can be triggered by a faulty rear left center ultrasonic sensor, wiring issues, water or dirt contamination, or a malfunction in the parking assist control module.

4. How do I diagnose the C1AE7 code on my Lexus?

Check the rear left center ultrasonic sensor for visible damage, inspect the wiring and connections for corrosion or loose connections, and use a diagnostic tool to confirm the sensor's functionality.

5. Can I drive my Lexus with the C1AE7 code active?

Yes, you can drive the vehicle, but the parking assist system may not function properly, increasing the risk of minor collisions during parking.

6. How can I fix the C1AE7 code on my Lexus?

Repairs may include cleaning or replacing the rear left center ultrasonic sensor, repairing damaged wiring, or resetting the parking assist system after addressing the issue.

7. How much does it cost to repair the C1AE7 code on a Lexus?

Repair costs can vary but typically range from $100 to $300 for sensor replacement, depending on labor rates and part prices.

8. Can a dirty sensor cause the C1AE7 code?

Yes, dirt, debris, or water on the sensor can interfere with its operation and trigger the code. Cleaning the sensor may resolve the issue.

9. Do I need to replace the sensor to clear the C1AE7 code?

Not always. Sometimes, cleaning the sensor or fixing wiring issues can resolve the problem without needing replacement.

10. How do I prevent the C1AE7 code from recurring?

Regularly clean the sensors, avoid pressure washing them directly, and inspect wiring connections periodically to ensure they remain secure and free of corrosion.