AutoCodes – Generic – B232B

B232B Code - Rain Sensor Optical Path 3 Performance

Quick Answer

Each optical track (received value) is monitored once a second while the rain sensor is active (WK Intermittent 1-5, LX intermittent 1-6) and compared to a small value. Common causes include Faulty Rain Sensor Module, Rain Sensor Module harness is open or shorted, Rain Sensor Module 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: B232B indicates Rain Sensor Optical Path 3 Performance.
Common causes: Common causes include Faulty Rain Sensor Module, Rain Sensor Module harness is open or shorted, Rain Sensor Module 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 564

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 Nov 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B232B Description

Each optical track (received value) is monitored once a second while the rain sensor is active (WK Intermittent 1-5, LX intermittent 1-6) and compared to a small value. The optical track value must be below this value for 4 minutes (checked once per second) before this Diagnostic Trouble Code (DTC) will be set. Once the DTC is set, the optical track must be above the threshold for 4 minutes (checked once per second) before the DTC is cleared.

OBDII Code B232B - Rain Sensor Optical Path 3 Performance - AutoCodes.com — B232B Code - Rain Sensor Optical Path 3 Performance

What does this mean?

What are the Possible Causes of the DTC B232B?

Faulty Rain Sensor Module
Rain Sensor Module harness is open or shorted
Rain Sensor Module circuit poor electrical connection

How to Fix the DTC B232B?

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 B232B 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 B232B code?

Need more information on how to fix the B232B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B232B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B232B Chrysler — Rain Sensor Optical Path 3 Performance
B232B Dodge — Rain Sensor Optical Path 3 Performance
B232B Jeep — Rain Sensor Optical Path 3 Performance
B232B RAM — Rain Sensor Optical Path 3 Performance

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 B232B Code

1. What does the OBDII code B232B mean?

B232B indicates a performance issue in the optical path 3 of the rain sensor, which is responsible for detecting rain and adjusting windshield wiper operation.

2. What are the common symptoms of code B232B?

Symptoms may include non-functional or erratic automatic wiper operation and, in some cases, a warning light or message on the dashboard.

3. What causes the B232B code to appear?

Common causes include a dirty or obstructed rain sensor, a malfunctioning rain sensor, damaged wiring, or a misaligned sensor.

4. How do I diagnose the B232B code?

Check for dirt or debris on the windshield near the rain sensor, inspect the sensor for proper alignment, and test the wiring and connections for damage or loose pins.

5. Can I still drive with a B232B code?

Yes, you can drive safely, but automatic wiper functionality may be compromised, requiring manual operation of the wipers in wet conditions.

6. How do I fix the B232B code?

Clean the windshield and rain sensor, ensure the sensor is properly aligned, repair or replace damaged wiring, and replace the sensor if itâ€™s faulty.

7. Where is the rain sensor located?

The rain sensor is typically mounted on the windshield near the rearview mirror, often behind a plastic cover.

8. Can a dirty windshield cause the B232B code?

Yes, dirt, debris, or even a poorly applied windshield tint can interfere with the optical path of the rain sensor and trigger this code.

9. How much does it cost to repair a B232B code?

Costs can vary widely but typically range from $50 to $300, depending on whether the issue is resolved by cleaning the sensor or replacing it.

10. Does resetting the code fix the problem permanently?

No, resetting the code without addressing the underlying issue will likely result in the code reappearing. Proper diagnosis and repairs are necessary.