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B127B 2017 Chevrolet Silverado Code - Rearview Camera Input Signal Circuit

Quick Answer

The B127B diagnostic trouble code (DTC) for the 2017 Chevrolet Silverado relates to the rearview camera input signal circuit. Common causes include Damaged wiring or connectors in the rearview camera circuit, Faulty rearview camera module, Issues with the display screen or its connections. 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
B127B 2017 Chevrolet Silverado indicates Rearview Camera Input Signal Circuit.
Common causes
Common causes include Damaged wiring or connectors in the rearview camera circuit, Faulty rearview camera module, Issues with the display screen or its connections.
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 24, 2024
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Code B127B 2017 Chevrolet Silverado Description

The B127B diagnostic trouble code (DTC) for the 2017 Chevrolet Silverado relates to the rearview camera input signal circuit. This code indicates that there is a malfunction in the circuit responsible for transmitting the video signal from the rearview camera to the display screen in the vehicle. The rearview camera is a crucial component for safe reversing and parking, as it provides the driver with a clear view of the area behind the vehicle, helping to prevent accidents and collisions.

OBDII Code B127B 2017 Chevrolet Silverado - Rearview Camera Input Signal Circuit
B127B 2017 Chevrolet Silverado Code - Rearview Camera Input Signal Circuit

Common Causes of B127B 2017 Chevrolet Silverado

  1. Damaged wiring or connectors in the rearview camera circuit.
  2. Faulty rearview camera module.
  3. Issues with the display screen or its connections.
  4. Water damage to the rearview camera or its components.
  5. Electrical system malfunction affecting the camera input signal.

Symptoms of B127B 2017 Chevrolet Silverado

  1. Rearview camera display not working or showing a distorted image.
  2. Error message on the display screen related to the rearview camera.
  3. Parking assist features not functioning correctly.
  4. Difficulty in reversing or parking due to reduced visibility.
  5. Malfunctioning blind-spot monitoring system.

How to Fix B127B 2017 Chevrolet Silverado

  1. Begin by visually inspecting the wiring and connectors in the rearview camera circuit for any signs of damage or corrosion. Repair or replace any damaged components.
  2. Test the rearview camera module to ensure it is functioning correctly. Replace the module if necessary.
  3. Check the connections to the display screen and ensure they are secure. Replace any faulty connections.
  4. If the issue persists, use a multimeter to test the voltage and continuity in the circuit to pinpoint the exact location of the malfunction.
  5. Reset the vehicle's computer system after completing the repairs to clear the DTC and ensure the rearview camera system is functioning properly.

Cost to Fix B127B 2017 Chevrolet Silverado

The cost of repairing the rearview camera input signal circuit on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, the parts required for this repair, such as wiring, connectors, or a new camera module, can range from $100 to $300. The labor costs for diagnosing and fixing the problem can add an additional $100 to $300, bringing the total repair cost to approximately $200 to $600.

What does this mean?

Tech Notes for B127B 2017 Chevrolet Silverado

A poor video image can be caused by ice, snow, and mud buildup on the lens of the Rearview Camera. Also, extreme lighting conditions can affect performance, such as operating in the dark or with bright sunlight shining on the camera. Extreme high or low temperatures can also affect image quality. An open or high resistance in the shield of the video signal circuit can also cause a distorted screen.

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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 B127B 2017 Chevrolet Silverado Code

1. What does the OBDII code B127B mean on a 2017 Chevrolet Silverado?

The code B127B indicates an issue with the Rearview Camera Input Signal Circuit, which may result in a malfunction of the rearview camera system.

2. What are the common symptoms of the B127B code in a 2017 Chevrolet Silverado?

Symptoms include the rearview camera not displaying an image, a distorted or blank screen, or an intermittent camera feed.

3. What causes the B127B code to appear on a 2017 Chevrolet Silverado?

Common causes include a faulty rearview camera, damaged wiring or connectors, a malfunctioning display unit, or a problem with the camera control module.

4. How can I diagnose the B127B code on a 2017 Chevrolet Silverado?

Start by inspecting the rearview camera's wiring and connectors for damage or corrosion. Use a scan tool to check for additional codes and perform system tests.

5. Can a damaged rearview camera trigger the B127B code?

Yes, a damaged or malfunctioning rearview camera can cause the B127B code by failing to send the correct input signal.

6. How do I fix the B127B code on a 2017 Chevrolet Silverado?

Repairs may include replacing the rearview camera, repairing or replacing damaged wiring or connectors, or updating/reprogramming the camera control module.

7. Is the B127B code a serious issue for a 2017 Chevrolet Silverado?

While it doesn't affect drivability, it can compromise safety by disabling the rearview camera, which is critical for reversing visibility.

8. Can a software issue cause the B127B code in a 2017 Chevrolet Silverado?

Yes, outdated or corrupted software in the camera control module or display unit can potentially trigger this code.

9. How much does it cost to repair the B127B code on a 2017 Chevrolet Silverado?

Costs vary depending on the issue, but replacing the rearview camera typically ranges from $150 to $400, including parts and labor.

10. Can I clear the B127B code without repairing the issue?

Clearing the code without addressing the root cause is not recommended, as the issue is likely to recur and affect the rearview camera's functionality.

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