AutoCodes – Generic – B23AA

B23AA Code - Implausible Data Received From Rain Sensor

Quick Answer

The Body Control Module (BCM) is the Local Interconnect Network (LIN) master for the Light Rain Sensing Module (LRSM). Common causes include Faulty Light Rain Sensing Module (LRSM), Light Rain Sensing Module (LRSM) harness is open or shorted, Light Rain Sensing Module (LRSM) 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
B23AA indicates Implausible Data Received From Rain Sensor.
Common causes
Common causes include Faulty Light Rain Sensing Module (LRSM), Light Rain Sensing Module (LRSM) harness is open or shorted, Light Rain Sensing Module (LRSM) 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,138
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Dec 04, 2019
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Code B23AA Description

The Body Control Module (BCM) is the Local Interconnect Network (LIN) master for the Light Rain Sensing Module (LRSM). The BCM monitors the information transmitted by the LRSM for correct format and validity. The Body Control Module requests information from the Light Rain Sensing Module (LRSM) and receives a signal not available as a reply from the LRSM.
OBDII Code B23AA - Implausible Data Received From Rain Sensor - AutoCodes.com
B23AA Code - Implausible Data Received From Rain Sensor

What are the Possible Causes of the DTC B23AA?

  • Faulty Light Rain Sensing Module (LRSM)
  • Light Rain Sensing Module (LRSM) harness is open or shorted
  • Light Rain Sensing Module (LRSM) circuit poor electrical connection

How to Fix the DTC B23AA?

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 B23AA 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

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 B23AA Code

1. What does the OBDII code B23AA mean?

The B23AA code indicates that the vehicle's control module has received implausible or invalid data from the rain sensor.

2. What are the common symptoms of the B23AA code?

Symptoms may include malfunctioning automatic wipers, a non-responsive rain sensor, or the wipers operating unexpectedly.

3. What causes the B23AA code to appear?

Common causes include a faulty rain sensor, wiring issues, a dirty or obstructed sensor, or a malfunction in the control module.

4. Can a dirty windshield cause the B23AA code?

Yes, a dirty, cracked, or obstructed windshield in the rain sensor area can interfere with its operation and trigger the code.

5. How do I diagnose the B23AA code?

Start by inspecting the rain sensor for damage or obstructions, check the wiring and connections for issues, and use a scan tool to confirm data communication.

6. Can I still drive with the B23AA code active?

Yes, you can drive with this code active, but automatic wiper functions may not work properly, which could be inconvenient or unsafe in rain.

7. How is the B23AA code fixed?

Repairs may involve cleaning or replacing the rain sensor, repairing damaged wiring, or reprogramming/repairing the control module if needed.

8. How much does it cost to fix the B23AA code?

Costs vary but typically range from $100 to $400, depending on whether the rain sensor, wiring, or control module needs repair or replacement.

9. Can a software update resolve the B23AA code?

In some cases, a software update for the control module may resolve communication issues and clear the code.

10. How can I prevent the B23AA code from occurring?

Keep the windshield clean, avoid damage to the rain sensor, and address any wiring issues promptly to prevent this code from appearing.

Discuss the causes and fixes for B23AA OBDII Code

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