OBD Guide
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B1A16

Microphone Input Circuit General Electrical Failure

B1A16 is an OBD-II diagnostic trouble code meaning: Microphone Input Circuit General Electrical Failure. Common causes: broken wires in the microphone circuit, short circuit in the circuit. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Voice control system failure
  • Problems with hands-free operation
  • Malfunction indicator lights up

Causes

  • Broken wires in the microphone circuit
  • Short circuit in the circuit
  • Microphone malfunction
  • Damage to connectors
  • Problems with the control unit

How to Fix

  1. Check the integrity of the wiring harness
  2. Inspect connectors for damage
  3. Check microphone functionality
  4. Replace faulty components
  5. Reset the error and check the system

Related codes

B1A15B1A17U0155

FAQ

What does the B1A16 code mean?

B1A16 is an OBD-II diagnostic trouble code that indicates: Microphone Input Circuit General Electrical Failure

What causes a B1A16 error code?

The most common causes of B1A16 include: Broken wires in the microphone circuit; Short circuit in the circuit; Microphone malfunction; Damage to connectors.

How do I fix a B1A16 diagnostic trouble code?

To fix B1A16: Check the integrity of the wiring harness. Inspect connectors for damage. Check microphone functionality. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1A16?

Yes, but get it checked soon

How much does it cost to fix B1A16?

The estimated repair cost for B1A16 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat