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Engine-Codes – Generic – B231D

B231D Code - Rear Wiper Motor Control Circuit Open

Quick Answer

The diagnostic code B231D indicates a problem with the rear wiper motor control circuit being open. Common causes include Damaged or corroded wiring in the rear wiper motor circuit, Blown fuse related to the rear wiper motor, Faulty relay that controls the rear wiper motor. 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
B231D indicates Rear Wiper Motor Control Circuit Open.
Common causes
Common causes include Damaged or corroded wiring in the rear wiper motor circuit, Blown fuse related to the rear wiper motor, Faulty relay that controls the rear wiper motor.
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 09, 2024
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Code B231D Description

The diagnostic code B231D indicates a problem with the rear wiper motor control circuit being open. In simpler terms, this means that there is a break or interruption in the electrical circuit that controls the rear wiper motor in the vehicle. The rear wiper motor is responsible for moving the rear windshield wiper, which is crucial for visibility during adverse weather conditions. When this circuit is open, it can lead to the rear wiper not functioning properly or not working at all.

OBDII Code B231D - Rear Wiper Motor Control Circuit Open
B231D Code - Rear Wiper Motor Control Circuit Open

Common Causes of B231D

  1. Damaged or corroded wiring in the rear wiper motor circuit.
  2. Blown fuse related to the rear wiper motor.
  3. Faulty relay that controls the rear wiper motor.
  4. Malfunctioning rear wiper motor.
  5. Loose or disconnected electrical connections in the rear wiper circuit.

Symptoms of B231D

  1. Rear wiper not moving or operating erratically.
  2. Rear wiper only working intermittently.
  3. Rear wiper making unusual noises while in operation.
  4. Rear wiper not returning to its rest position after use.
  5. Rear wiper blade not making proper contact with the rear windshield.

How to Fix B231D

  1. Begin by inspecting the wiring and connections in the rear wiper motor circuit for any visible damage or corrosion. Repair or replace any damaged wires or connectors.
  2. Check and replace any blown fuses related to the rear wiper motor circuit.
  3. Test and, if necessary, replace the relay that controls the rear wiper motor.
  4. Evaluate the rear wiper motor itself for any signs of malfunction and replace if needed.
  5. Finally, test the rear wiper system to ensure that the issue has been resolved and that the rear wiper is functioning correctly.

Cost to Fix B231D

The cost of repairing a rear wiper motor control circuit open issue can vary depending on the specific cause of the problem and the vehicle's make and model. On average, the repair cost for this issue can range from $100 to $300, including parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate based on various factors, so it's recommended to consult with a local mechanic for a more accurate estimate. Typically, auto repair shops charge between $80 and $150 per hour for labor, but rates may differ based on location and the type of repair facility.

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Code B231D 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 B231D Code

1. What are the common symptoms of OBDII code B231D - Rear Wiper Motor Control Circuit Open?

- Common symptoms include the rear wiper not functioning at all or operating intermittently. The wiper may move slower than usual or stop mid-cycle.

2. What can cause the OBDII code B231D to trigger?

- The code B231D is typically triggered by an open circuit in the rear wiper motor control circuit. This can be caused by a damaged wiring harness, a faulty wiper motor, or a loose connection.

3. How can I diagnose the cause of OBDII code B231D - Rear Wiper Motor Control Circuit Open?

- To diagnose the issue, you can start by visually inspecting the wiring harness and connectors for any damage. Using a multimeter, you can test for continuity in the circuit to pinpoint the exact location of the open circuit.

4. Is it safe to continue driving with OBDII code B231D present?

- While the code B231D is related to the rear wiper motor control circuit, it should not affect the overall drivability or safety of the vehicle. However, it is recommended to address the issue promptly to ensure the rear wiper functions properly.

5. Can I repair OBDII code B231D - Rear Wiper Motor Control Circuit Open myself?

- Repairing the code B231D may involve checking and repairing the wiring, connectors, or replacing the rear wiper motor if necessary. If you have experience with automotive electrical systems, you may be able to diagnose and repair the issue yourself.

6. How much does it typically cost to repair OBDII code B231D?

- The cost of repairing OBDII code B231D can vary depending on the underlying cause. Simple repairs like fixing a loose connection may be inexpensive, while replacing a faulty wiper motor or repairing a damaged wiring harness can be more costly.

7. Will resetting the OBDII code B231D clear the issue?

- Resetting the OBDII code B231D may temporarily clear the error code, but if the underlying issue such as an open circuit in the rear wiper motor control circuit is not addressed, the code is likely to reappear.

8. Can extreme weather conditions cause OBDII code B231D to trigger?

- Extreme weather conditions, such as exposure to excessive moisture or extreme temperatures, can potentially damage the wiring or connectors in the rear wiper motor control circuit, leading to the triggering of code B231D.

9. How important is it to fix OBDII code B231D promptly?

- While OBDII code B231D may not directly impact the vehicle's drivability, it is essential to address the issue promptly to ensure the rear wiper functions correctly, especially in adverse weather conditions where visibility is crucial.

10. Are there any preventive maintenance tips to avoid OBDII code B231D in the future?

- To prevent OBDII code B231D from occurring in the future, it is advisable to regularly inspect the rear wiper system for any signs of wear or damage, ensure proper wiring harness routing, and protect the connectors from moisture and corrosion.

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