AutoCodes – Generic – B147E

B147E Code - Channel 7 Audio Speaker Output

Quick Answer

The amplifier receives fused battery current from a fuse in the Power Distribution Center (PDC) at all times. Common causes include Faulty Audio Amplifier, Audio Amplifier harness is open or shorted, Audio Amplifier 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: B147E indicates Channel 7 Audio Speaker Output.
Common causes: Common causes include Faulty Audio Amplifier, Audio Amplifier harness is open or shorted, Audio Amplifier 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 3,286

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 15, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B147E Description

The amplifier receives fused battery current from a fuse in the Power Distribution Center (PDC) at all times. The internal circuitry of the amplifier switches the amplifier on based upon a CAN-I bus message that is received from the Radio Receiver Module (RRM) whenever the RRM is turned on. The amplifier receives the sound signal inputs from the left and right rear outputs of the RRM, and then sends the amplified speaker outputs for each of those channels to the speakers.
The amplifier receives information from the Body Control Module (BCM) and RRM, that communicates the correct channel setting for optimum speaker sound and output.
There are two amplifiers available, an 8 channel, rated at 322 watts (7 channels are used) and a 12 channel (11 channels are used), rated at 506 watts.

OBDII Code B147E - Channel 7 Audio Speaker Output - AutoCodes.com — B147E Code - Channel 7 Audio Speaker Output

What does this mean?

What are the Possible Causes of the DTC B147E?

Faulty Audio Amplifier
Audio Amplifier harness is open or shorted
Audio Amplifier circuit poor electrical connection

How to Fix the DTC B147E?

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 does this mean?

Code Tech Notes

B147E-11 CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT SHORT TO GROUND
B147E-12 CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT SHORT TO BATTERY
B147E-13 CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT OPEN
B147E-92 CHANNEL 7 AUDIO SPEAKER OUTPUT PERFORMANCE OR INCORRECT OPERATION

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B147E 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 B147E code?

Need more information on how to fix the B147E code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B147E code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B147E Chrysler — Channel 7 Audio Speaker Output
B147E Dodge — Channel 7 Audio Speaker Output
B147E Jeep — Channel 7 Audio Speaker Output
B147E RAM — Channel 7 Audio Speaker Output

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 B147E Code

1. What does OBDII code B147E mean?

Code B147E indicates a fault in the Channel 7 audio speaker output circuit, which typically refers to an issue with a specific speaker or its connected wiring.

2. What are the common symptoms of code B147E?

Common symptoms include no sound or distorted audio from one or more speakers, particularly the one assigned to Channel 7 in the audio system.

3. What causes code B147E to appear?

This code is often caused by a faulty speaker, damaged wiring or connectors, an issue with the audio amplifier, or a malfunction in the head unit.

4. How do I diagnose code B147E?

Start by inspecting the speaker and its wiring for visible damage or loose connections. Use a multimeter to check for continuity and proper voltage in the circuit. If no issues are found, test the amplifier and the head unit.

5. Can I still drive with code B147E?

Yes, this code does not affect the drivability or safety of the vehicle, but it may impair the audio system's functionality.

6. How do I fix code B147E?

Repairs may include replacing a faulty speaker, repairing damaged wiring, reconnecting loose connectors, or replacing a malfunctioning amplifier or head unit.

7. How much does it cost to repair code B147E?

Costs vary depending on the issue. Replacing a speaker may cost $50-$200, while amplifier or head unit repairs can range from $300-$1000.

8. Can code B147E be caused by software issues?

Yes, in rare cases, a software glitch or outdated firmware in the head unit or amplifier can trigger this code. Updating the system may resolve the issue.

9. Do I need special tools to fix code B147E?

Basic tools like a multimeter and screwdrivers are often sufficient for diagnosing and repairing this issue. However, accessing certain components may require panel removal tools.

10. Will clearing the code fix the issue?

Clearing the code without addressing the underlying problem will only provide a temporary solution, as the code will reappear if the fault persists.