AutoCodes – Generic – B2557

B2557 Code - Vehicle Speed

Quick Answer

The Body Control Module (BCM) receives the 2 vehicle speed signals via CAN communication. Common causes include Faulty Wheel Speed Sensor, Wheel Speed Sensor harness is open or shorted, Wheel Speed Sensor 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: B2557 indicates Vehicle Speed.
Common causes: Common causes include Faulty Wheel Speed Sensor, Wheel Speed Sensor harness is open or shorted, Wheel Speed Sensor 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 8,625

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 Apr 23, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2557 Description

The Body Control Module (BCM) receives the 2 vehicle speed signals via CAN communication. One signal is transmitted by the Unified Meter. Another signal is transmitted by the ABS actuator and electric unit (control unit). The BCM compares both signals to detect the vehicle speed.

OBDII Code B2557 - Vehicle Speed - AutoCodes.com — B2557 Code - Vehicle Speed

What does this mean?

What are the Possible Causes of the DTC B2557?

Faulty Wheel Speed Sensor
Wheel Speed Sensor harness is open or shorted
Wheel Speed Sensor circuit poor electrical connection
Faulty Unified Meter
Faulty ABS Actuator And Electric Unit (Control Unit)

How to Fix the DTC B2557?

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 B2557 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 B2557 code?

Need more information on how to fix the B2557 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2557 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2557 Infiniti — Vehicle Speed
B2557 Nissan — Vehicle Speed

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 B2557 Code

1. What are the common symptoms of OBDII code B2557 (Vehicle Speed)?

- Common symptoms include erratic speedometer readings, ABS warning light illumination, and issues with cruise control functionality.

2. What are the possible causes of OBDII code B2557?

- Possible causes include a faulty vehicle speed sensor, damaged wiring or connectors related to the speed sensor, or issues with the ABS module.

3. How can I diagnose the cause of OBDII code B2557?

- Diagnose by checking the vehicle speed sensor for proper operation, inspecting the wiring and connectors for damage, and using a scan tool to retrieve additional diagnostic trouble codes.

4. How can I repair OBDII code B2557?

- Repair options include replacing the faulty vehicle speed sensor, repairing damaged wiring or connectors, or addressing any issues with the ABS module.

5. Can OBDII code B2557 be safely ignored?

- It is not recommended to ignore this code, as it can affect the accuracy of your speedometer readings and potentially impact the operation of other vehicle systems.

6. What are some tips for preventing OBDII code B2557 from recurring?

- Regularly inspect and maintain the vehicle speed sensor, wiring, and connectors to prevent issues that could trigger this code.

7. Is it safe to drive with OBDII code B2557 present?

- It is generally safe to drive with this code, but it is important to address the underlying issue promptly to avoid potential issues with speed-related systems.

8. Can a DIY enthusiast repair OBDII code B2557 at home?

- Depending on your skill level and access to tools, you may be able to diagnose and repair this code at home, but professional assistance may be needed for more complex issues.

9. How long does it typically take to repair OBDII code B2557?

- The repair time can vary depending on the exact cause of the code, but it may take anywhere from a few hours to a day for diagnosis and repair.

10. Will resetting the OBDII system clear OBDII code B2557?

- Resetting the OBDII system may temporarily clear the code, but it is important to address the underlying issue to prevent the code from reappearing.