AutoCodes – Mercury – B2913 Mercury

B2913 Mercury Code - Audio Subwoofer Not Connected

Quick Answer

The subwoofer amplifier receives voltage and ground. Common causes include Faulty Audio Subwoofer, Audio Subwoofer harness is open or shorted, Audio Subwoofer 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: B2913 Mercury indicates Audio Subwoofer Not Connected.
Common causes: Common causes include Faulty Audio Subwoofer, Audio Subwoofer harness is open or shorted, Audio Subwoofer 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 478

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 Feb 19, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2913 Mercury Description

The subwoofer amplifier receives voltage and ground. To enable the subwoofer amplifier, the Audio Control Module (ACM) sends voltage. The circuit acts as both an output (to enable the amplifier) and an input (to detect an amplifier overload condition). A variable resistor in the subwoofer amplifier modifies the voltage signal from the ACM. In the event of an overload, the ACM clips the audio output signal to the amplifier (heard as distortion), in order to prevent damage to the amplifier and speaker. An open in circuit will cause the subwoofer to produce no sound, because the enable signal will not reach the subwoofer amplifier. A short to ground or short to voltage can cause severe distortion to be heard in the subwoofer. The Diagnostic Trouble Code (DTC) sets when the ACM does not detect the subwoofer through the circuit.

OBDII Code B2913 Mercury - Audio Subwoofer Not Connected - AutoCodes.com — B2913 Mercury Code - Audio Subwoofer Not Connected

What does this mean?

What are the Possible Causes of the DTC B2913 Mercury?

Faulty Audio Subwoofer
Audio Subwoofer harness is open or shorted
Audio Subwoofer circuit poor electrical connection
Faulty Audio Control Module (ACM)

How to Fix the DTC B2913 Mercury?

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 B2913 Mercury 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.

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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 B2913 Mercury Code

1. What are the common symptoms of OBDII code B2913 Mercury (Audio Subwoofer Not Connected)?

- Common symptoms include no sound coming from the subwoofer, distorted audio, or no bass output.

2. What are the possible causes of OBDII code B2913 Mercury?

- Possible causes include a disconnected or faulty subwoofer, damaged wiring or connectors, or a malfunctioning audio system module.

3. How can I diagnose the issue related to OBDII code B2913 Mercury?

- You can start by checking the connections to the subwoofer, inspecting the wiring for damage, and using a diagnostic tool to scan the audio system module for errors.

4. Can I repair OBDII code B2913 Mercury myself?

- If you are familiar with automotive electrical systems, you may be able to repair this issue yourself by reconnecting or replacing the subwoofer, fixing any damaged wiring, or resetting the audio system module.

5. Is it safe to continue driving with OBDII code B2913 Mercury?

- It is generally safe to drive with this code, as it primarily affects the audio system. However, it is recommended to address the issue to ensure proper functioning of the audio components.

6. How much does it cost to fix OBDII code B2913 Mercury at a repair shop?

- The cost of fixing this issue can vary depending on the root cause and the labor rates of the repair shop. It is recommended to get a diagnostic assessment to determine the exact cost.

7. Are there any temporary solutions to address OBDII code B2913 Mercury?

- You can try checking and reconnecting any loose connections to the subwoofer or audio system module as a temporary solution. However, a permanent fix may require further inspection and repair.

8. Will resetting the audio system clear OBDII code B2913 Mercury?

- Resetting the audio system may temporarily clear the code, but if the underlying issue, such as a disconnected subwoofer, is not addressed, the code is likely to reappear.

9. Can extreme temperatures or humidity affect OBDII code B2913 Mercury?

- Extreme temperatures or humidity can potentially worsen the symptoms associated with this code, as they may affect the electrical connections and components of the audio system.

10. How can I prevent OBDII code B2913 Mercury from occurring in the future?

- Regularly inspecting the audio system components, ensuring proper connections, and addressing any issues promptly can help prevent the recurrence of this code.