AutoCodes – Lexus – B2238 Lexus

B2238 Lexus Code - Rear Left Center Sensor Malfunction

Quick Answer

The No. Common causes include Faulty Rear Left Center Sensor, Rear Left Center Sensor harness is open or shorted, Rear Left Center Sensor circuit poor electrical connection. 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: B2238 Lexus indicates Rear Left Center Sensor Malfunction.
Common causes: Common causes include Faulty Rear Left Center Sensor, Rear Left Center Sensor harness is open or shorted, Rear Left Center Sensor circuit poor electrical connection.
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 1,573

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 Oct 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2238 Lexus Description

The No. 3 Ultrasonic Sensor (Rear Left Center Sensor) is installed on the front bumper. The Clearance Warning ECU detects obstacles based on signals received from the Rear Left Center Sensor. If the Rear Left Center Sensor circuit has an open, short or other malfunction, it will not function normally. The Diagnostic Trouble Code (DTC) sets if a malfunction of No. 3 Ultrasonic Sensor (Rear Left Center Sensor).

OBDII Code B2238 Lexus - Rear Left Center Sensor Malfunction - AutoCodes.com — B2238 Lexus Code - Rear Left Center Sensor Malfunction

What does this mean?

What are the Possible Causes of the DTC B2238 Lexus?

Faulty Rear Left Center Sensor
Rear Left Center Sensor harness is open or shorted
Rear Left Center Sensor circuit poor electrical connection
Faulty Clearance Warning ECU

How to Fix the DTC B2238 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 B2238 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 B2238 Lexus code?

Need more information on how to fix the B2238 Lexus code? Get Access to Factory Service Manuals

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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 B2238 Lexus Code

1. What are the common symptoms of OBDII code B2238 in a Lexus related to the Rear Left Center Sensor malfunction?

- Common symptoms include issues with the parking assist system, such as inaccurate distance detection or a complete failure of the system.

2. What are the possible causes of OBDII code B2238 indicating a Rear Left Center Sensor malfunction in a Lexus?

- The code B2238 can be triggered by a faulty rear left center sensor, damaged wiring, sensor alignment issues, or a malfunction in the parking assist control module.

3. How can I diagnose the OBDII code B2238 in a Lexus for a Rear Left Center Sensor malfunction?

- Diagnosis involves using an OBDII scanner to retrieve the code, visually inspecting the sensor and its wiring for any visible damage, and conducting a sensor test using diagnostic tools.

4. Can I drive my Lexus with the OBDII code B2238 indicating a Rear Left Center Sensor malfunction?

- It is generally safe to drive your Lexus with this code, but it is recommended to have the parking assist system checked and repaired to ensure accurate distance detection and optimal safety.

5. How can I repair OBDII code B2238 for a Rear Left Center Sensor malfunction in my Lexus?

- Repair options include replacing the faulty sensor, repairing damaged wiring, realigning the sensor, or addressing any issues with the parking assist control module.

6. Are there any DIY tips for addressing the OBDII code B2238 related to a Rear Left Center Sensor malfunction in a Lexus?

- DIY tips include carefully inspecting the sensor and wiring for visible damage, ensuring proper sensor alignment, and consulting the vehicle's repair manual for specific troubleshooting steps.

7. Can weather conditions affect the triggering of OBDII code B2238 in a Lexus due to a Rear Left Center Sensor malfunction?

- Weather conditions such as extreme temperatures or moisture can potentially impact the sensor's functionality and trigger the B2238 code, so it's essential to keep sensors clean and protected.

8. How do I reset the OBDII code B2238 after repairing the Rear Left Center Sensor issue in my Lexus?

- The code can be reset using an OBDII scanner or by disconnecting the car's battery for a few minutes to clear the error code from the system.

9. Is it common for the OBDII code B2238 related to a Rear Left Center Sensor malfunction to reoccur in a Lexus?

- If the root cause of the issue is not properly addressed during repairs, there is a possibility for the code to reoccur, emphasizing the importance of thorough diagnosis and repair.

10. Can a professional mechanic help diagnose and repair the OBDII code B2238 indicating a Rear Left Center Sensor malfunction in my Lexus?

- Yes, a qualified mechanic with experience in automotive diagnostics and sensor systems can efficiently diagnose and repair the B2238 code in your Lexus to ensure proper functionality.