AutoCodes – Lincoln – B1155 Lincoln

B1155 Lincoln Code - Subwoofer 1 Short to Battery

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 Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B1155 Lincoln indicates Subwoofer 1 Short to Battery.
Common causes: Common causes include Faulty Audio Subwoofer, Audio Subwoofer harness is open or shorted, Audio Subwoofer circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 877

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1155 Lincoln 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 a short to voltage is detected on the circuit.

OBDII Code B1155 Lincoln - Subwoofer 1 Short to Battery - AutoCodes.com — B1155 Lincoln Code - Subwoofer 1 Short to Battery

What does this mean?

What are the Possible Causes of the DTC B1155 Lincoln?

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 B1155 Lincoln?

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 B1155 Lincoln 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 B1155 Lincoln Code

1. What are the common symptoms of OBDII code B1155 in a Lincoln related to "Subwoofer 1 Short to Battery"?

- The common symptoms include distorted or no sound coming from the subwoofer, intermittent operation, or complete subwoofer failure.

2. What are the possible causes of OBDII code B1155 indicating "Subwoofer 1 Short to Battery" in a Lincoln?

- The code B1155 can be triggered by a short circuit in the wiring, a faulty subwoofer speaker, or a malfunctioning amplifier.

3. How can I diagnose the issue causing OBDII code B1155 "Subwoofer 1 Short to Battery" in my Lincoln?

- You can start by visually inspecting the wiring connected to the subwoofer, checking for any exposed wires or damage. You may also test the subwoofer speaker and amplifier for continuity and proper functioning.

4. Is it safe to continue driving my Lincoln with OBDII code B1155 "Subwoofer 1 Short to Battery" present?

- While the vehicle may still be operable, it is recommended to address the issue promptly to prevent further damage to the audio system components or potential electrical issues.

5. Can I repair OBDII code B1155 "Subwoofer 1 Short to Battery" in my Lincoln myself?

- Depending on your level of expertise, you may be able to repair the issue yourself by replacing the faulty subwoofer speaker, repairing the wiring, or troubleshooting the amplifier. However, professional assistance may be necessary for more complex repairs.

6. How much does it typically cost to fix OBDII code B1155 "Subwoofer 1 Short to Battery" in a Lincoln?

- The cost of repair can vary depending on the specific cause of the issue. Replacing a subwoofer speaker or repairing wiring may cost a few hundred dollars, while addressing amplifier issues could be more expensive.

7. Are there any preventive measures I can take to avoid OBDII code B1155 "Subwoofer 1 Short to Battery" in my Lincoln?

- Regularly inspecting the audio system components, avoiding water damage, and ensuring proper installation of aftermarket audio equipment can help prevent issues leading to code B1155.

8. Will resetting the OBDII system clear the B1155 code related to "Subwoofer 1 Short to Battery" in my Lincoln?

- Resetting the OBDII system may clear the code temporarily, but if the underlying issue causing the code persists, it is likely to reappear. It is best to diagnose and address the root cause of the problem.

9. Can OBDII code B1155 "Subwoofer 1 Short to Battery" in a Lincoln affect other vehicle systems?

- While the code specifically relates to the subwoofer and audio system, electrical issues like short circuits can potentially impact other systems in the vehicle. Addressing the code promptly is recommended to avoid further complications.

10. How long does it typically take to repair OBDII code B1155 "Subwoofer 1 Short to Battery" in a Lincoln?

- The repair time can vary depending on the exact cause of the issue and the complexity of the repair. Simple fixes like repairing wiring may take a few hours, while more involved repairs could require a day or more.