Engine-Codes - Mercury - B1155 MERCURY

B1155 MERCURY Code - Subwoofer 1 Short to Battery

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

|B1155 MERCURY code possible causes

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

|How is the B1155 MERCURY code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the B1155 MERCURY code

Labor: 1.0

The cost to diagnose the B1155 MERCURY code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B1155 MERCURY code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What is B1155 MERCURY code meaning?

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.

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