AutoCodes – Generic – B15B4

B15B4 Code - CD Changer Malfunction

Quick Answer

The Diagnostic Trouble Code (DTC) is stored when a malfunction occurs in the Radio and Display Receiver Assembly (or Navigation Receiver Assembly). Common causes include Faulty Radio and Display Receiver Assembly (or Navigation Receiver Assembly), Radio and Display Receiver Assembly harness is open or shorted, Radio and Display Receiver Assembly 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: B15B4 indicates CD Changer Malfunction.
Common causes: Common causes include Faulty Radio and Display Receiver Assembly (or Navigation Receiver Assembly), Radio and Display Receiver Assembly harness is open or shorted, Radio and Display Receiver Assembly 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 1,822

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 Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
Add Comment

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

Code B15B4 Description

The Diagnostic Trouble Code (DTC) is stored when a malfunction occurs in the Radio and Display Receiver Assembly (or Navigation Receiver Assembly).

OBDII Code B15B4 - CD Changer Malfunction - AutoCodes.com — B15B4 Code - CD Changer Malfunction

What does this mean?

What are the Possible Causes of the DTC B15B4?

Faulty Radio and Display Receiver Assembly (or Navigation Receiver Assembly)
Radio and Display Receiver Assembly harness is open or shorted
Radio and Display Receiver Assembly circuit poor electrical connection

How to Fix the DTC B15B4?

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 B15B4 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 B15B4 code?

Need more information on how to fix the B15B4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B15B4 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B15B4 Lexus — CD Changer Malfunction
B15B4 Scion — CD Changer Malfunction
B15B4 Toyota — CD Changer Malfunction

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.