AutoCodes – Generic – B231B

B231B Code - Rear Wiper Motor Control Circuit Low

Quick Answer

The Totally Integrated Power Module (TIPM) monitors the Rear Wiper Motor Control Circuit. Common causes include Faulty Rear Wiper Motor Relay, Rear Wiper Motor Relay harness is open or shorted, Rear Wiper Motor Relay 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: B231B indicates Rear Wiper Motor Control Circuit Low.
Common causes: Common causes include Faulty Rear Wiper Motor Relay, Rear Wiper Motor Relay harness is open or shorted, Rear Wiper Motor Relay 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 1,742

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 07, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B231B Description

The Totally Integrated Power Module (TIPM) monitors the Rear Wiper Motor Control Circuit. The TIPM sets the OBDII code when the Rear Wiper Motor Control Circuit is not to factory specifications.

OBDII Code B231B - Rear Wiper Motor Control Circuit Low - AutoCodes.com — B231B Code - Rear Wiper Motor Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC B231B?

Faulty Rear Wiper Motor Relay
Rear Wiper Motor Relay harness is open or shorted
Rear Wiper Motor Relay circuit poor electrical connection
Faulty Totally Integrated Power Module (TIPM)

How to Fix the DTC B231B?

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 B231B 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 B231B code?

Need more information on how to fix the B231B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B231B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B231B Chrysler — Rear Wiper Motor Control Circuit Low
B231B Dodge — Rear Wiper Motor Control Circuit Low
B231B Jeep — Rear Wiper Motor Control Circuit Low
B231B RAM — Rear Wiper Motor Control Circuit Low

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 Code

1. What does the OBDII code B231B mean?

The code B231B indicates a "Rear Wiper Motor Control Circuit Low," meaning the vehicle's control module has detected a low voltage or short in the rear wiper motor circuit.

2. What are common symptoms of the B231B code?

Symptoms typically include the rear wiper not functioning, moving slower than normal, or stopping mid-swipe.

3. What causes the B231B code to appear?

Common causes include a faulty rear wiper motor, a damaged or corroded wiring harness, a blown fuse, or a defective control module.

4. Can I still drive with the B231B code?

Yes, you can drive with this code, but the rear wiper may not work, reducing visibility in bad weather and compromising safety.

5. How do you diagnose the B231B code?

Diagnosis involves inspecting the rear wiper motor, checking for damaged wiring or loose connections, testing the fuse, and using a multimeter to measure circuit voltage.

6. How do you fix the B231B code?

Repairs may include replacing the rear wiper motor, repairing or replacing damaged wiring, tightening connections, or replacing a blown fuse.

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

Repair costs vary but could range from $100 to $300, depending on whether you need a new wiper motor or just wiring repairs.

8. Can a bad relay cause the B231B code?

Yes, a malfunctioning rear wiper relay can cause low voltage in the circuit, leading to the B231B code.

9. Will clearing the code fix the problem?

Clearing the code may temporarily reset the warning, but the underlying issue must be addressed to prevent the code from returning.

10. How can I prevent the B231B code from occurring?

Regularly inspect the rear wiper system for wear, clean connections to prevent corrosion, and ensure proper maintenance of the wiper motor and electrical components.