OBD Guide
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B15B7

Bluetooth Module Malfunction

B15B7 is an OBD-II diagnostic trouble code meaning: Bluetooth Module Malfunction. Common causes: problems with module wiring harness, bluetooth module malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • No Bluetooth connection
  • Hands-free malfunctions
  • Audio drops out while streaming
  • Error message on display

Causes

  • Problems with module wiring harness
  • Bluetooth module malfunction
  • Software problems
  • Corrosion or poor contact of connectors
  • Module power problems

How to Fix

  1. Check connections and module wiring harness
  2. Update module software
  3. Check power supply and grounding of the module
  4. Replace the Bluetooth module if necessary

Related codes

U0155U0256B15B8

FAQ

What does the B15B7 code mean?

B15B7 is an OBD-II diagnostic trouble code that indicates: Bluetooth Module Malfunction

What causes a B15B7 error code?

The most common causes of B15B7 include: Problems with module wiring harness; Bluetooth module malfunction; Software problems; Corrosion or poor contact of connectors.

How do I fix a B15B7 diagnostic trouble code?

To fix B15B7: Check connections and module wiring harness. Update module software. Check power supply and grounding of the module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B15B7?

Limited driving only, diagnose soon

How much does it cost to fix B15B7?

The estimated repair cost for B15B7 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat