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B1950 Honda Code - Communication Bus Line Error

Quick Answer

The B1950 Honda code indicates a Communication Bus Line Error, which means there is an issue with the communication network within the vehicle. Common causes include Damaged wiring harnesses or connectors, Loose connections in the communication network, Faulty electronic control units (ECUs). 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
B1950 Honda indicates Communication Bus Line Error.
Common causes
Common causes include Damaged wiring harnesses or connectors, Loose connections in the communication network, Faulty electronic control units (ECUs).
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 29, 2024
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Code B1950 Honda Description

The B1950 Honda code indicates a Communication Bus Line Error, which means there is an issue with the communication network within the vehicle. In modern vehicles, various electronic control units (ECUs) communicate with each other over a network known as the Controller Area Network (CAN). This network allows different systems in the vehicle to share information and work together seamlessly. When the communication bus line encounters an error, it can disrupt the flow of data between ECUs, leading to malfunctions in various vehicle systems.

OBDII Code B1950 Honda - Communication Bus Line Error
B1950 Honda Code - Communication Bus Line Error

Common Causes of B1950 Honda

  1. Damaged wiring harnesses or connectors
  2. Loose connections in the communication network
  3. Faulty electronic control units (ECUs)
  4. Issues with the Controller Area Network (CAN) bus
  5. Water damage or corrosion in the wiring system

Symptoms of B1950 Honda

  1. Illumination of warning lights on the dashboard (e.g., check engine light, ABS light)
  2. Issues with starting, stalling, or rough idling
  3. Malfunctioning power windows, power door locks, or climate control
  4. Vehicle going into limp mode

How to Fix B1950 Honda

  1. Perform a thorough diagnostic scan using a professional scan tool to identify the specific fault code and affected systems.
  2. Inspect the wiring harnesses, connectors, and components related to the communication bus line for any visible damage or corrosion.
  3. Test the electronic control units (ECUs) for proper functionality and communication with the CAN bus.
  4. Repair or replace any damaged wiring, connectors, or faulty ECUs as needed.
  5. Clear the fault codes, reset the system, and perform a road test to ensure the issue has been resolved.

Cost to Fix B1950 Honda

The typical repair costs for a Communication Bus Line Error can vary depending on the extent of the issue and the specific components that need to be replaced. In general, the repair for this code may range from $200 to $500, including parts and labor. However, it's essential to note that diagnosis time and labor rates at auto repair shops can vary significantly. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive prices. It's advisable to obtain quotes from multiple shops to get a more accurate estimate for 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 B1950 Honda Code

1. What are the common symptoms of OBDII code B1950 in a Honda related to Communication Bus Line Error?

Symptoms may include issues with the vehicle's communication systems, malfunctioning dashboard lights, and failure of some electronic components.

2. What are the typical causes of OBDII code B1950 in a Honda?

The code B1950 usually indicates a problem with the communication bus line within the vehicle, which can be caused by wiring issues, damaged connectors, or faulty control modules.

3. How can I diagnose the Communication Bus Line Error associated with OBDII code B1950 in my Honda?

To diagnose the issue, it is recommended to perform a thorough inspection of the wiring harness, check for loose or corroded connectors, and use a diagnostic scanner to analyze the communication between different modules.

4. Can a DIY enthusiast repair OBDII code B1950 in a Honda at home?

While some basic troubleshooting steps like checking wiring connections can be done at home, resolving the Communication Bus Line Error often requires advanced diagnostic tools and expertise, so it is advisable to seek professional help.

5. Are there any common mistakes to avoid when dealing with OBDII code B1950 in a Honda?

Avoid overlooking simple wiring issues, misinterpreting the diagnostic trouble codes, and replacing control modules without proper testing, as these mistakes can lead to unnecessary expenses and ineffective repairs.

6. Is it safe to continue driving my Honda with OBDII code B1950 related to Communication Bus Line Error?

Continuing to drive the vehicle with this error code may result in further electrical issues or malfunctions, so it is best to address the problem promptly to prevent any potential safety hazards.

7. How much does it typically cost to repair OBDII code B1950 in a Honda at a dealership or repair shop?

The cost of repairing the Communication Bus Line Error associated with code B1950 can vary depending on the extent of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

8. Can resetting the OBDII code B1950 in my Honda temporarily fix the issue?

Resetting the code may temporarily clear the error message, but if the root cause of the Communication Bus Line Error is not addressed, the code is likely to reappear once the issue resurfaces.

9. How long does it usually take to repair OBDII code B1950 in a Honda?

The repair time for this error code can vary based on the complexity of the issue and the availability of replacement parts, but it may take anywhere from a few hours to a full day to diagnose and fix the problem.

10. Is OBDII code B1950 specific to certain Honda models or is it a common issue across different vehicles?

The OBDII code B1950 related to Communication Bus Line Error is not specific to Honda vehicles only; it can be encountered in various makes and models that utilize an onboard diagnostics system with communication bus lines.

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