AutoCodes – Buick – B123E Buick

B123E Buick 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 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 Buick 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: 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.

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Code Popularity 419

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 12, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B123E Buick 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 Buick - Radio Keypad Button Signal Circuit - AutoCodes.com — B123E Buick Code - Radio Keypad Button Signal Circuit

What does this mean?

What are the Possible Causes of the DTC B123E Buick?

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

How to Fix the DTC B123E 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B123E 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.

Need more information about the B123E Buick 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 B123E Buick Code

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

- Common symptoms include non-functional radio keypad buttons, unresponsive radio controls, or intermittent issues with the radio system.

2. What are the possible causes of the B123E code in a Buick's Radio Keypad Button Signal Circuit?

- The B123E code may be triggered by a faulty radio keypad, damaged wiring, loose connections, or a defective radio control module.

3. How can I diagnose the B123E code related to the Radio Keypad Button Signal Circuit in my Buick?

- Diagnosis involves inspecting the radio keypad for physical damage, checking the wiring for continuity, and testing the radio control module for proper functionality.

4. Can I repair the B123E code on my Buick's Radio Keypad Button Signal Circuit myself?

- Depending on the exact cause, you may be able to repair the issue yourself by replacing the faulty radio keypad, repairing damaged wiring, or resetting the radio control module.

5. Will the B123E code affecting the Radio Keypad Button Signal Circuit impact the overall performance of my Buick?

- While the B123E code is related to the radio system, it may not directly affect the performance of your vehicle. However, it can cause inconvenience by limiting radio functionality.

6. How important is it to address the B123E code in the Radio Keypad Button Signal Circuit of my Buick?

- It is recommended to address the B123E code promptly to ensure proper functionality of the radio system and avoid potential issues with accessing radio controls while driving.

7. Is it safe to continue driving my Buick with the B123E OBDII code related to the Radio Keypad Button Signal Circuit?

- It is generally safe to continue driving, but it is advisable to address the issue as soon as possible to prevent any inconvenience or potential distractions while driving.

8. Are there any preventative measures to avoid encountering the B123E code in the Radio Keypad Button Signal Circuit of my Buick?

- Regularly inspecting the radio system, avoiding water damage, and handling the radio keypad with care can help prevent issues that may trigger the B123E code.

9. How long does it typically take to repair the B123E code affecting the Radio Keypad Button Signal Circuit in a Buick?

- The repair time can vary depending on the exact cause of the issue. Simple repairs like replacing a faulty radio keypad may take a short time, while complex wiring issues may require more time.

10. Can a professional mechanic help me diagnose and repair the B123E code in the Radio Keypad Button Signal Circuit of my Buick?

- Yes, a qualified mechanic with experience in automotive electronics can assist in diagnosing and repairing the B123E code to ensure proper functionality of the radio system in your Buick.