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B231B Dodge Code - Rear Wiper Motor Control Circuit Low

Quick Answer

The B231B diagnostic trouble code (DTC) for Dodge vehicles indicates a problem with the rear wiper motor control circuit being detected as operating at a lower voltage than expected. Common causes include Damaged wiring or connectors in the rear wiper motor control circuit, Faulty rear wiper motor, Malfunctioning rear wiper motor control module. 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
B231B Dodge indicates Rear Wiper Motor Control Circuit Low.
Common causes
Common causes include Damaged wiring or connectors in the rear wiper motor control circuit, Faulty rear wiper motor, Malfunctioning rear wiper motor control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code B231B Dodge Description

The B231B diagnostic trouble code (DTC) for Dodge vehicles indicates a problem with the rear wiper motor control circuit being detected as operating at a lower voltage than expected. The rear wiper motor control circuit is responsible for controlling the operation of the rear wiper motor, which is essential for maintaining visibility through the rear windshield during adverse weather conditions. When this circuit is operating at a low voltage, it can lead to issues with the rear wiper motor not functioning properly or at all.

OBDII Code B231B Dodge - Rear Wiper Motor Control Circuit Low
B231B Dodge Code - Rear Wiper Motor Control Circuit Low

Common Causes of B231B Dodge

  1. Damaged wiring or connectors in the rear wiper motor control circuit.
  2. Faulty rear wiper motor.
  3. Malfunctioning rear wiper motor control module.
  4. Corrosion or debris affecting the rear wiper system.
  5. Electrical issues such as a blown fuse related to the rear wiper motor.

Symptoms of B231B Dodge

  1. Rear wiper not functioning at all.
  2. Rear wiper operating intermittently or erratically.
  3. Rear wiper moving slower than usual.
  4. Rear wiper making unusual noises during operation.
  5. Rear wiper blade not properly clearing the rear windshield.

How to Fix B231B Dodge

  1. Begin by conducting a thorough visual inspection of the rear wiper motor control circuit, checking for any visible damage to wiring or connectors.
  2. Test the rear wiper motor and control module using a multimeter to determine if they are functioning within the specified voltage range.
  3. Replace any damaged wiring, connectors, or components identified during the inspection.
  4. Clear any corrosion or debris from the rear wiper system that may be affecting its operation.
  5. Reset the rear wiper motor control module and perform a final test to ensure proper functionality of the rear wiper.

Cost to Fix B231B Dodge

The typical repair costs for addressing the B231B code related to the rear wiper motor control circuit low voltage issue can vary depending on the specific cause of the problem and the extent of repairs needed. In general, the cost of parts for this repair can range from $50 to $200, while labor costs may add an additional $100 to $300, depending on the shop's hourly rates and the complexity of the repair.

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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 B231B Dodge Code

1. What does the OBDII code B231B mean on a Dodge?

It indicates a problem with the Rear Wiper Motor Control Circuit, specifically a low voltage condition.

2. What are the common symptoms of code B231B?

Symptoms may include the rear wiper not functioning, intermittent operation, or slower-than-normal wiper movement.

3. What causes the B231B code to appear?

Common causes include damaged wiring, a faulty rear wiper motor, a failed wiper relay, or a malfunctioning control module.

4. How can I diagnose the B231B code?

Start by inspecting the wiring and connectors for damage or corrosion, then test the rear wiper motor and related components for proper operation.

5. Can I still drive my Dodge with the B231B code present?

Yes, you can drive the vehicle, but the rear wiper may not work, which could impact visibility in bad weather.

6. How do I fix the B231B code on a Dodge?

Repairs may involve replacing the rear wiper motor, repairing or replacing damaged wiring, or replacing the wiper relay.

7. How much does it cost to fix the B231B code?

Repair costs vary but can range from $50 to $300 depending on whether you need wiring repairs or a new rear wiper motor.

8. Can a bad fuse cause the B231B code?

Yes, a blown fuse related to the rear wiper circuit can trigger this code.

9. Do I need special tools to fix the B231B code?

Basic tools like a multimeter for testing voltage and continuity, and possibly a repair manual, are helpful for diagnosing the issue.

10. Will clearing the B231B code solve the problem?

Clearing the code will temporarily remove it, but if the underlying issue isn’t fixed, the code will likely return.

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