OBD Guide
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B147B

Channel 6 Audio Speaker Output Circuit High

B147B is an OBD-II diagnostic trouble code meaning: Channel 6 Audio Speaker Output Circuit High. Common causes: short circuit in wiring harness, speaker malfunction. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • No sound from channel 6 speaker
  • Sound distortion
  • Clicking or crackling sounds from the audio system
  • Amplifier protection tripped

Causes

  • Short circuit in wiring harness
  • Speaker malfunction
  • Amplifier problems
  • Mechanical damage to wiring
  • Incorrect speaker impedance

How to Fix

  1. Check speaker impedance of channel 6
  2. Inspect the wiring harness for damage
  3. Check the voltage at the amplifier output
  4. Replace the faulty speaker if necessary
  5. Reflash or replace the amplifier if there are problems

Related codes

B147AB147CB1480

FAQ

What does the B147B code mean?

B147B is an OBD-II diagnostic trouble code that indicates: Channel 6 Audio Speaker Output Circuit High

What causes a B147B error code?

The most common causes of B147B include: Short circuit in wiring harness; Speaker malfunction; Amplifier problems; Mechanical damage to wiring.

How do I fix a B147B diagnostic trouble code?

To fix B147B: Check speaker impedance of channel 6. Inspect the wiring harness for damage. Check the voltage at the amplifier output. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B147B?

Yes, but get it checked soon

How much does it cost to fix B147B?

The estimated repair cost for B147B is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat