AutoCodes – Buick – B1055 Buick

B1055 Buick Code - Right Rear Door Audio Output 4 Circuit

Quick Answer

Vehicles without Amplifier: Each of the audio output channel circuits (+) and (-), at the radio have a DC bias voltage that is approximately one-half of battery voltage. Common causes include Faulty Radio Unit, Faulty Audio Amplifier (If equipped), Faulty Right Rear Door Speaker. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B1055 Buick indicates Right Rear Door Audio Output 4 Circuit.
Common causes: Common causes include Faulty Radio Unit, Faulty Audio Amplifier (If equipped), Faulty Right Rear Door Speaker.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 922

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1055 Buick Description

Vehicles without Amplifier:
Each of the audio output channel circuits (+) and (-), at the radio have a DC bias voltage that is approximately one-half of battery voltage. When using a DMM, each of the audio output channel circuits will measure approximately 6.5 V DC. The audio being played on the system is produced by a varying AC voltage that is centered around the DC bias voltage on the same circuit. The AC voltage is what causes the speaker cone to move and produce sound. The frequency (Hz) of the AC voltage signal is directly related to the frequency of the input (audio source playing) to the audio system. Both the DC bias voltage and the AC voltage signals are needed for the audio system to properly produce sound.

Vehicles with Amplifier:
The Media Oriented Systems Transport (MOST) is a high-speed multimedia network technology. The serial MOST bus uses a ring topology and synchronous data communication to transmit audio, video, data and control information between any devices attached.
The audio amplifier is a participant on the MOST network. The audio amplifier receives audio input and control information from the MOST bus.
Each of the audio output channel circuits (+) and (−), at the audio amplifier have a DC bias voltage that is approximately one-half of the battery voltage. When using a DMM, each of the audio output channel circuits will measure approximately 6.5V DC. The audio being played on the system is produced by a varying AC voltage that is centered around the DC bias voltage on the same circuit. The AC voltage is what causes the speaker cone to move and produce sound.

OBDII Code B1055 Buick - Right Rear Door Audio Output 4 Circuit - AutoCodes.com — B1055 Buick Code - Right Rear Door Audio Output 4 Circuit

What does this mean?

What are the Possible Causes of the DTC B1055 Buick?

Faulty Radio Unit
Faulty Audio Amplifier (If equipped)
Faulty Right Rear Door Speaker
Right Rear Door Speaker harness is open or shorted
Right Rear Door Speaker circuit poor electrical connection

How to Fix the DTC B1055 Buick?

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 does this mean?

Code Tech Notes

B1055:01 Right Rear Door Audio Output 4 Circuit Short to Battery
B1055:02 Right Rear Door Audio Output 4 Circuit Short to Ground
B1055:04 Right Rear Door Audio Output 4 Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1055 Buick 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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Need Help with the Code?

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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 B1055 Buick Code

1. What are the common symptoms of OBDII code B1055 in a Buick related to the Right Rear Door Audio Output 4 Circuit?

The common symptoms include malfunctioning audio system in the right rear door, such as no sound coming from the speakers or distorted sound.

2. What are the potential causes of OBDII code B1055 in a Buick indicating an issue with the Right Rear Door Audio Output 4 Circuit?

Potential causes include a faulty audio amplifier in the right rear door, damaged wiring or connectors, or a malfunctioning audio control module.

3. How can I diagnose the problem related to OBDII code B1055 in a Buick concerning the Right Rear Door Audio Output 4 Circuit?

You can diagnose the issue by checking the wiring and connectors in the right rear door, testing the audio amplifier, and using a diagnostic scanner to read the code and pinpoint the exact problem.

4. What are some repair tips for resolving OBDII code B1055 in a Buick associated with the Right Rear Door Audio Output 4 Circuit?

Repair tips include repairing or replacing damaged wiring and connectors, testing and replacing the audio amplifier if necessary, and resetting the audio control module.

5. Can I reset OBDII code B1055 in a Buick related to the Right Rear Door Audio Output 4 Circuit myself?

Yes, you can try to reset the code yourself by using a diagnostic scanner to clear the code after addressing the underlying issue with the audio system.

6. Is it safe to continue driving my Buick with OBDII code B1055 indicating a problem with the Right Rear Door Audio Output 4 Circuit?

It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure proper functioning of the audio system.

7. How much does it typically cost to repair OBDII code B1055 in a Buick involving the Right Rear Door Audio Output 4 Circuit?

The cost of repair can vary depending on the exact cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic services.

8. Can weather conditions or moisture affect the occurrence of OBDII code B1055 in a Buick related to the Right Rear Door Audio Output 4 Circuit?

Yes, moisture or water ingress into the right rear door can potentially cause damage to the audio components and lead to the triggering of this code.

9. Are there any preventive measures I can take to avoid encountering OBDII code B1055 in a Buick due to issues with the Right Rear Door Audio Output 4 Circuit?

You can take preventive measures such as ensuring the right rear door is properly sealed to prevent water intrusion, maintaining the audio system components, and addressing any audio issues promptly.

10. How long does it typically take to repair OBDII code B1055 in a Buick associated with the Right Rear Door Audio Output 4 Circuit?

The repair time can vary based on the extent of the issue and the availability of parts, but it may take a few hours to a day for a professional technician to diagnose and fix the problem.