OBD Guide
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B12A6

Info Display Module Internal Malfunction

B12A6 is an OBD-II diagnostic trouble code meaning: Info Display Module Internal Malfunction. Common causes: module software failure, damage to internal module components. Estimated repair cost: $56–333.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–333 (est.)

Symptoms

  • Display not working or flickering
  • Missing some information on the display
  • Spontaneous display shutdown
  • System hangs

Causes

  • Module software failure
  • Damage to internal module components
  • Module power problems
  • Short circuit in wiring harness
  • Oxidation of connector contacts

How to Fix

  1. Checking module power and ground
  2. Inspect the wiring harness and connectors for damage
  3. Rebooting the module (power off for 10 minutes)
  4. Module software update
  5. Replacing the Information Display Module

Related codes

B12A5B12A7U0155

FAQ

What does the B12A6 code mean?

B12A6 is an OBD-II diagnostic trouble code that indicates: Info Display Module Internal Malfunction

What causes a B12A6 error code?

The most common causes of B12A6 include: Module software failure; Damage to internal module components; Module power problems; Short circuit in wiring harness.

How do I fix a B12A6 diagnostic trouble code?

To fix B12A6: Checking module power and ground. Inspect the wiring harness and connectors for damage. Rebooting the module (power off for 10 minutes). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B12A6?

Limited driving only, diagnose soon

How much does it cost to fix B12A6?

The estimated repair cost for B12A6 is $56–333. Actual cost depends on your vehicle, location, and labor rates.

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