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B123E 2015 Chevrolet Silverado Code - Radio Keypad Button Signal Circuit

Quick Answer

The B123E diagnostic trouble code (DTC) for the 2015 Chevrolet Silverado indicates an issue with the radio keypad button signal circuit. Common causes include Faulty radio keypad or button assembly, Damaged wiring or connectors in the signal circuit, Corrosion or poor connections at the BCM or radio module. 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
B123E 2015 Chevrolet Silverado indicates Radio Keypad Button Signal Circuit.
Common causes
Common causes include Faulty radio keypad or button assembly, Damaged wiring or connectors in the signal circuit, Corrosion or poor connections at the BCM or radio module.
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 Oct 04, 2024
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Code B123E 2015 Chevrolet Silverado Description

The B123E diagnostic trouble code (DTC) for the 2015 Chevrolet Silverado indicates an issue with the radio keypad button signal circuit. This code is part of the vehicle's body control module (BCM) diagnostics and is specifically related to the functionality of the radio's keypad. The radio keypad is responsible for receiving input from the user, allowing for functions such as changing radio stations, adjusting volume, and accessing various media sources. When the BCM detects a malfunction in the signal circuit, it triggers the B123E code.

OBDII Code B123E 2015 Chevrolet Silverado - Radio Keypad Button Signal Circuit
B123E 2015 Chevrolet Silverado Code - Radio Keypad Button Signal Circuit

Common Causes of B123E 2015 Chevrolet Silverado

  1. Faulty radio keypad or button assembly.
  2. Damaged wiring or connectors in the signal circuit.
  3. Corrosion or poor connections at the BCM or radio module.
  4. Software glitches or programming issues within the BCM.
  5. Short circuits or open circuits in the keypad signal circuit.

Symptoms of B123E 2015 Chevrolet Silverado

  1. Inability to control the radio functions using the keypad.
  2. Intermittent or complete loss of audio output from the radio.
  3. Display errors or malfunctions on the radio screen.
  4. Unresponsive buttons on the radio keypad.
  5. Dimming or flickering of the radio display when buttons are pressed.

How to Fix B123E 2015 Chevrolet Silverado

  1. Diagnostic Scan: Begin with a thorough diagnostic scan using an OBD-II scanner to confirm the B123E code and check for any related codes that may provide additional context.
  2. Visual Inspection: Conduct a visual inspection of the radio keypad, wiring, and connectors for any signs of damage, corrosion, or loose connections.
  3. Test Keypad Functionality: Use a multimeter to test the continuity and resistance of the keypad buttons and the signal circuit to identify any faults.
  4. Repair or Replace Components: Depending on the findings, repair any damaged wiring or connectors. If the keypad is faulty, consider replacing it with a new unit.
  5. Reprogram BCM (if necessary): If the issue persists after hardware repairs, reprogramming or updating the BCM software may be required to clear the code and restore functionality.

Cost to Fix B123E 2015 Chevrolet Silverado

The cost to repair the B123E code can vary significantly based on the specific issue identified during diagnosis. Generally, the cost of parts for a replacement radio keypad can range from $50 to $200, while labor costs may range from $80 to $150 per hour depending on the shop's location and expertise. A typical repair may take 1 to 3 hours, leading to a total cost estimate of approximately $150 to $600. It is important to note that labor rates can be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing. For the most accurate estimate, it is advisable to consult local repair shops and inquire about their rates and diagnostic fees.

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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 B123E 2015 Chevrolet Silverado Code

1. What does the OBDII code B123E mean on a 2015 Chevrolet Silverado?

The code B123E indicates an issue with the Radio Keypad Button Signal Circuit, meaning the system has detected a fault in the circuit responsible for transmitting signals from the radio keypad buttons.

2. What are the common symptoms of a B123E code?

Common symptoms include unresponsive radio keypad buttons, intermittent functionality of the radio controls, or no control over specific radio features.

3. What causes the B123E code to appear?

This code can be caused by a faulty radio keypad, damaged wiring or connectors in the signal circuit, or a malfunctioning radio control module.

4. How do I diagnose the B123E code on my Silverado?

Start by inspecting the radio keypad and associated wiring for damage, loose connections, or corrosion. Use a multimeter to test the circuit for continuity and verify the signal output.

5. Can a software update fix the B123E code?

In some cases, a software update for the radio control module may resolve the issue if it is related to a programming glitch. Check with the dealership for available updates.

6. How can I fix the B123E code on my 2015 Chevrolet Silverado?

Repairs may include replacing a faulty radio keypad, repairing or replacing damaged wiring, or replacing the radio control module if it is defective.

7. Is the B123E code serious?

While it does not affect the drivability of the vehicle, the B123E code can be an inconvenience as it impairs radio functionality. It should be addressed to restore proper operation.

8. Can I clear the B123E code without fixing the issue?

Clearing the code without repairing the underlying issue may result in the code returning. Proper diagnosis and repair are necessary to resolve the problem.

9. How much does it typically cost to fix the B123E code?

The cost can vary depending on the root cause. Replacing a radio keypad may cost $50–$150, while repairing wiring or replacing the radio module could cost $200–$500 or more.

10. Can I fix the B123E code myself?

If you have basic electrical knowledge and tools, you can inspect and repair wiring or replace the radio keypad yourself. For more complex issues, professional assistance is recommended.

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