AutoCodes – GMC – B123E 2015 GMC Sierra

B123E 2015 GMC Sierra Code - Radio Keypad Button Signal Circuit

Quick Answer

The radio controls communicate radio control inputs directly to the radio through a discrete circuit for volume up, volume down, and power button. Common causes include Faulty Radio Controls, Radio Controls harness is open or shorted, Radio Controls circuit poor electrical connection. 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: B123E 2015 GMC Sierra indicates Radio Keypad Button Signal Circuit.
Common causes: Common causes include Faulty Radio Controls, Radio Controls harness is open or shorted, Radio Controls circuit poor electrical connection.
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 176

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 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B123E 2015 GMC Sierra Description

The radio controls communicate radio control inputs directly to the radio through a discrete circuit for volume up, volume down, and power button. It also uses a series of resistors through a signal circuit when the home, seek up, seek down and phone buttons are pressed. After receiving the message, the radio will perform the requested function. Messages communicated between the radio and the radio controls include the following: Button presses/knob rotations, Commands for the state of indicators, and Controls back-lighting. The Diagnostic Trouble Code (DTC) will be set when the radio detects an open/high resistance, short to voltage, or short to ground on the radio controls key signal circuit.

OBDII Code B123E 2015 GMC Sierra - Radio Keypad Button Signal Circuit - AutoCodes.com — B123E 2015 GMC Sierra Code - Radio Keypad Button Signal Circuit

What does this mean?

What are the Possible Causes of the DTC B123E 2015 GMC Sierra?

Faulty Radio Controls
Radio Controls harness is open or shorted
Radio Controls circuit poor electrical connection
Faulty Radio

How to Fix the DTC B123E 2015 GMC Sierra?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B123E 2015 GMC Sierra 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.

Need more information about the B123E 2015 GMC Sierra code?

Need more information on how to fix the B123E 2015 GMC Sierra code? Get Access to Factory Service Manuals

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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 GMC Sierra Code

1. What are the common symptoms of OBDII code B123E in a 2015 GMC Sierra related to the Radio Keypad Button Signal Circuit?

- Common symptoms include malfunctioning radio keypad buttons, unresponsive controls, and error messages on the display screen.

2. What can cause the OBDII code B123E to trigger in a 2015 GMC Sierra?

- The code B123E is typically triggered by a fault in the radio keypad button signal circuit, which can be caused by wiring issues, a faulty keypad, or a problem with the radio unit itself.

3. How can I diagnose the OBDII code B123E in my 2015 GMC Sierra?

- Diagnosing the code B123E involves checking the wiring connections, inspecting the radio keypad buttons for physical damage, and using a diagnostic scanner to pinpoint the exact issue in the signal circuit.

4. Is it safe to continue driving my 2015 GMC Sierra with the OBDII code B123E present?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to prevent further damage or inconvenience.

5. Can I repair the OBDII code B123E in my 2015 GMC Sierra myself?

- Depending on your skill level and access to tools, you may be able to repair the code B123E yourself by troubleshooting the wiring, replacing the faulty keypad, or seeking professional help for complex repairs.

6. How much does it typically cost to fix the OBDII code B123E in a 2015 GMC Sierra?

- The cost of fixing the code B123E can vary depending on the exact cause of the issue, but it may involve expenses for replacement parts, labor costs, and diagnostic fees.

7. Are there any preventative measures I can take to avoid the OBDII code B123E in my 2015 GMC Sierra?

- To prevent the code B123E, you can periodically inspect the radio keypad buttons for wear or damage, avoid spilling liquids on the keypad, and address any electrical issues promptly.

8. Can the OBDII code B123E affect other systems in my 2015 GMC Sierra?

- While the code B123E specifically relates to the radio keypad button signal circuit, electrical issues in one part of the vehicle can sometimes have secondary effects on other systems, so it's essential to address the problem promptly.

9. Will resetting the OBDII system clear the B123E code in my 2015 GMC Sierra?

- Resetting the OBDII system may temporarily clear the code B123E, but if the underlying issue is not addressed, the code is likely to reappear once the problem is detected again.

10. How long does it typically take to repair the OBDII code B123E in a 2015 GMC Sierra?

- The repair time for the code B123E can vary depending on the complexity of the issue and the availability of parts, but it may range from a few hours to a day at a repair shop.