OBD Guide
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B147A

Channel 6 Audio Speaker Output Circuit Low

B147A is an OBD-II diagnostic trouble code meaning: Channel 6 Audio Speaker Output Circuit Low. Common causes: open or short circuit in wiring harness, speaker malfunction. Estimated repair cost: $11–56.

Severity
✅ Low
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$11–56 (est.)

Symptoms

  • Loss of sound from one of the speakers
  • Sound distortion
  • Clicking or crackling sounds from the speakers

Causes

  • Open or short circuit in wiring harness
  • Speaker malfunction
  • Amplifier problems
  • Poor contact in connectors
  • Contact corrosion

How to Fix

  1. Check the integrity of the wiring harness
  2. Check the speaker status
  3. Check the operation of the amplifier
  4. Clean connector contacts
  5. Replace faulty components

Related codes

B147BB147CB147D

FAQ

What does the B147A code mean?

B147A is an OBD-II diagnostic trouble code that indicates: Channel 6 Audio Speaker Output Circuit Low

What causes a B147A error code?

The most common causes of B147A include: Open or short circuit in wiring harness; Speaker malfunction; Amplifier problems; Poor contact in connectors.

How do I fix a B147A diagnostic trouble code?

To fix B147A: Check the integrity of the wiring harness. Check the speaker status. Check the operation of the amplifier. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B147A?

Do not drive — repair immediately

How much does it cost to fix B147A?

The estimated repair cost for B147A is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat