AutoCodes – Nissan – B177B Nissan

B177B Nissan Code - Roof Status Incorrect

Quick Answer

The Soft Top Control Unit sets the OBDII code when the soft top is not set by the Soft Top Control Unit. Common causes include Faulty Soft Top Control Unit, Soft Top Control Unit harness is open or shorted, Soft Top Control Unit 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: B177B Nissan indicates Roof Status Incorrect.
Common causes: Common causes include Faulty Soft Top Control Unit, Soft Top Control Unit harness is open or shorted, Soft Top Control Unit 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 4,648

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 Jun 27, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B177B Nissan Description

The Soft Top Control Unit sets the OBDII code when the soft top is not set by the Soft Top Control Unit.

OBDII Code B177B Nissan - Roof Status Incorrect - AutoCodes.com — B177B Nissan Code - Roof Status Incorrect

What does this mean?

What are the Possible Causes of the DTC B177B Nissan?

Faulty Soft Top Control Unit
Soft Top Control Unit harness is open or shorted
Soft Top Control Unit circuit poor electrical connection

How to Fix the DTC B177B Nissan?

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 B177B Nissan 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.

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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 B177B Nissan Code

1. What are the common symptoms of OBDII code B177B Nissan (Roof Status Incorrect)?

- The common symptoms include the malfunction indicator light (MIL) illuminating on the dashboard and a message indicating "Roof Status Incorrect" displayed on the vehicle information screen.

2. What are the possible causes of OBDII code B177B Nissan (Roof Status Incorrect)?

- The code B177B typically indicates a communication error between the roof control module and other related modules in the vehicle. This could be due to a faulty roof control module, wiring issues, or software glitches.

3. How can I diagnose the OBDII code B177B Nissan (Roof Status Incorrect)?

- Diagnosing this code usually involves using a diagnostic scanner to retrieve the fault codes and performing a thorough inspection of the roof control module, wiring connections, and related components.

4. Can I still drive my vehicle with the OBDII code B177B Nissan (Roof Status Incorrect) illuminated?

- While the code B177B may not directly affect the drivability of the vehicle, it is recommended to address the underlying issue promptly to prevent potential issues with the roof operation or other related systems.

5. How can I repair the OBDII code B177B Nissan (Roof Status Incorrect)?

- Repairing this code may involve resetting the fault codes using a diagnostic scanner, checking and repairing any damaged wiring, replacing the roof control module if necessary, and ensuring all connections are secure.

6. Is it safe to manually operate the roof if the OBDII code B177B Nissan (Roof Status Incorrect) is present?

- It is not recommended to manually operate the roof if the code B177B is present, as there may be communication errors that could potentially cause damage to the roof system.

7. Can a software update fix the OBDII code B177B Nissan (Roof Status Incorrect)?

- In some cases, a software update provided by the manufacturer may address communication issues that trigger the code B177B. Consult with a dealership or qualified technician for more information.

8. How much does it typically cost to repair the OBDII code B177B Nissan (Roof Status Incorrect)?

- The cost of repairing the code B177B can vary depending on the underlying cause. It is recommended to obtain a diagnostic and repair estimate from a professional technician.

9. Will disconnecting the battery reset the OBDII code B177B Nissan (Roof Status Incorrect)?

- Disconnecting the battery may temporarily clear the fault code, but it is not a guaranteed solution. It is best to diagnose and address the root cause of the issue to prevent the code from reoccurring.

10. Can extreme weather conditions trigger the OBDII code B177B Nissan (Roof Status Incorrect)?

- Extreme weather conditions, such as heavy rain or extreme temperatures, may expose existing wiring or module issues that could trigger the code B177B. It is important to ensure the vehicle is properly maintained to prevent weather-related issues.