Engine-Codes - Generic - B15D0

B15D0 - MOST Communication Malfunction

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

B15D0 Possible Causes

  • Faulty Speaker
  • Speaker harness is open or shorted
  • Speaker circuit poor electrical connection
  • Faulty Radio Receiver Assembly
  • Faulty Display and Navigation Module Display
  • Faulty Stereo Component Amplifier Assembly

How is the B15D0 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 B15D0 code

Labor: 1.0

The cost to diagnose the B15D0 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

B15D0 Meaning

This Diagnostic Trouble Code (DTC) is stored when the MOST network cannot be established after the master unit is activated. If a short occurs in a speaker circuit, the sound from the corresponding speaker will be low or almost impossible to hear. If the volume is turned up in this situation, to prevent excessive current flow due to the short circuit, the stereo component amplifier assembly stops operating when its output exceeds a certain level. When the operation of the stereo component amplifier assembly stops, the audio and visual system will not function normally. This is because MOST communication will stop due to the shut down of the amplifier causing an error in the MOST network. The stereo component amplifier assembly will start operating again when the engine switch is turned off and back on (ACC) again. However, the amplifier will stop operating again if its output exceeds a certain level. When the stereo component amplifier assembly stops operating and a malfunction occurs in the audio and visual system due to a short in a speaker circuit, this DTC will be stored.

More Information

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