B1055 2016 Chevrolet Silverado 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 2016 Chevrolet Silverado 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.
Code B1055 2016 Chevrolet Silverado Description
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.
What are the Possible Causes of the DTC B1055 2016 Chevrolet Silverado?
- 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 2016 Chevrolet Silverado?
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.
Code Tech Notes
B1055:02 Right Rear Door Audio Output 4 Circuit Short to Ground
B1055:04 Right Rear Door Audio Output 4 Circuit Open
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1055 2016 Chevrolet Silverado 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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Frequently Asked Questions about B1055 2016 Chevrolet Silverado Code
1. What does the OBDII code B1055 mean on a 2016 Chevrolet Silverado?
The B1055 code indicates an issue with the Right Rear Door Audio Output 4 Circuit, which is part of the audio system.
2. What are common symptoms of code B1055 in a 2016 Chevrolet Silverado?
Common symptoms include no audio from the right rear door speaker, intermittent sound, or distorted audio output.
3. What causes the B1055 code to appear in the Silverado?
Causes may include a faulty speaker, damaged wiring or connectors, a malfunctioning audio amplifier, or a software issue in the audio control module.
4. Can the B1055 code affect other vehicle systems?
No, this code typically affects only the audio system and does not impact other vehicle systems.
5. How do I diagnose the B1055 code on a 2016 Chevrolet Silverado?
Start by inspecting the right rear door speaker, wiring, and connectors. Use a multimeter to check continuity and test the audio signal output from the amplifier.
6. Can a blown speaker cause the B1055 code?
Yes, a blown or damaged speaker can trigger the code due to an open or shorted circuit.
7. How do I fix the B1055 code in my Silverado?
Repairs may involve replacing the right rear door speaker, repairing damaged wiring, securing loose connections, or replacing the audio amplifier if necessary.
8. Is the B1055 code a common problem in 2016 Chevrolet Silverados?
While not extremely common, audio circuit issues like this can occur, especially as the vehicle ages or if the audio system has been modified.
9. Can I still drive my truck with the B1055 code present?
Yes, the truck is safe to drive, but the audio system may not function properly, particularly the right rear door speaker.
10. Do I need special tools to fix the B1055 code?
Basic tools like a multimeter and possibly a diagnostic scanner are helpful for testing and clearing the code after repairs.
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