AutoCodes – Chevrolet – B123E Chevrolet

B123E Chevrolet 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 Chevrolet 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 316

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B123E Chevrolet 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 Chevrolet - Radio Keypad Button Signal Circuit - AutoCodes.com — B123E Chevrolet Code - Radio Keypad Button Signal Circuit

What does this mean?

What are the Possible Causes of the DTC B123E Chevrolet?

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

How to Fix the DTC B123E Chevrolet?

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 Chevrolet 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 Chevrolet code?

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

Need Help with the Code?

Get the B123E Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

B123E 2014 Chevrolet Silverado — Radio Keypad Button Signal Circuit
B123E 2015 Chevrolet Silverado — Radio Keypad Button Signal Circuit
B123E 2016 Chevrolet Silverado — Radio Keypad Button Signal Circuit
B123E 2017 Chevrolet Silverado — Radio Keypad Button Signal Circuit
B123E 2018 Chevrolet Silverado — Radio Keypad Button Signal Circuit

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 Chevrolet Code

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

The common symptoms include non-responsive keypad buttons on the radio, inability to change radio stations or adjust volume using the keypad, and a flashing or non-functional radio display.

2. What are the possible causes of OBDII code B123E in a Chevrolet related to the Radio Keypad Button Signal Circuit?

Possible causes may include a faulty radio keypad, wiring issues in the signal circuit, a malfunctioning radio module, or a communication error between the radio and the vehicle's computer.

3. How can I diagnose the OBDII code B123E in a Chevrolet related to the Radio Keypad Button Signal Circuit?

Diagnosis typically involves inspecting the radio keypad for physical damage, checking the wiring connections for any loose or corroded pins, and using a diagnostic scanner to retrieve specific error codes related to the radio module.

4. Can I repair the OBDII code B123E in a Chevrolet related to the Radio Keypad Button Signal Circuit myself?

Depending on your experience and tools available, you may be able to replace a faulty radio keypad or address wiring issues. However, for more complex problems like a malfunctioning radio module, it's recommended to seek professional assistance.

5. Is it safe to continue driving with OBDII code B123E related to the Radio Keypad Button Signal Circuit illuminated in a Chevrolet?

While the code may not directly affect the drivability of the vehicle, it's important to address the underlying issue promptly to prevent any potential safety hazards or further damage to the vehicle's electrical system.

6. Can resetting the OBDII code B123E related to the Radio Keypad Button Signal Circuit in a Chevrolet fix the problem?

Resetting the code may temporarily clear the error, but if the root cause of the issue persists, the code is likely to reappear. It's crucial to diagnose and repair the underlying problem to prevent future occurrences.

7. Are there any software updates or recalls related to OBDII code B123E in a Chevrolet for the Radio Keypad Button Signal Circuit?

Check with your local Chevrolet dealership or visit the manufacturer's website to see if there are any software updates or recalls specifically addressing issues with the radio keypad signal circuit.

8. How much can I expect to pay for repairs related to OBDII code B123E in a Chevrolet related to the Radio Keypad Button Signal Circuit?

The cost of repairs can vary depending on the specific cause of the issue. Replacing a faulty radio keypad may range from $100 to $300, while addressing more complex wiring or module problems could cost several hundred dollars.

9. Will fixing the OBDII code B123E related to the Radio Keypad Button Signal Circuit affect my Chevrolet's warranty?

If your Chevrolet is still under warranty, it's best to consult with your dealership or authorized service center before performing any repairs yourself. Addressing the issue through official channels can help maintain warranty coverage.

10. How can I prevent OBDII code B123E related to the Radio Keypad Button Signal Circuit in my Chevrolet in the future?

Regularly inspecting and maintaining the radio keypad, avoiding exposure to extreme temperatures or moisture, and addressing any electrical issues promptly can help prevent the recurrence of this OBDII code.