OBD Guide
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B1200

Audio-HVAC Display Module

B1200 is an OBD-II diagnostic trouble code meaning: Audio-HVAC Display Module. Common causes: damage to module wiring harness, software failure. Estimated repair cost: $56–167.

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

Symptoms

  • No sound from the audio system
  • Climate control does not work
  • Display hangs or resets

Causes

  • Damage to module wiring harness
  • Software failure
  • Module power problems
  • Mechanical damage to the module

How to Fix

  1. Check the integrity of the wiring harness
  2. Check module power supply
  3. Reboot the module (disconnect and reconnect the battery)
  4. Update module software
  5. Replace the module if necessary

Related codes

B1201B1202U1000

FAQ

What does the B1200 code mean?

B1200 is an OBD-II diagnostic trouble code that indicates: Audio-HVAC Display Module

What causes a B1200 error code?

The most common causes of B1200 include: Damage to module wiring harness; Software failure; Module power problems; Mechanical damage to the module.

How do I fix a B1200 diagnostic trouble code?

To fix B1200: Check the integrity of the wiring harness. Check module power supply. Reboot the module (disconnect and reconnect the battery). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1200?

Yes, but get it checked soon

How much does it cost to fix B1200?

The estimated repair cost for B1200 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat