OBD Guide
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U12A7

Lost Communication With Display Screen Module

U12A7 is an OBD-II diagnostic trouble code meaning: Lost Communication With Display Screen Module. Common causes: broken or damaged wires, display module failure. Estimated repair cost: $56–278.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • The display in the cabin does not work or blinks
  • No indication on the dashboard
  • Malfunctions of the multimedia system
  • Check Engine light comes on
  • Lost connection with other systems

Causes

  • Broken or damaged wires
  • Display module failure
  • Problems with connectors
  • Software glitch
  • Module power problems

How to Fix

  1. Check the integrity of the wiring harness
  2. Inspect connectors for oxidation
  3. Check display module power supply
  4. Reboot the system (disconnect the battery for 10 minutes)
  5. Replace the display module if necessary

Related codes

U12A6U12A8U12A9

FAQ

What does the U12A7 code mean?

U12A7 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Display Screen Module

What causes a U12A7 error code?

The most common causes of U12A7 include: Broken or damaged wires; Display module failure; Problems with connectors; Software glitch.

How do I fix a U12A7 diagnostic trouble code?

To fix U12A7: Check the integrity of the wiring harness. Inspect connectors for oxidation. Check display module power supply. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U12A7?

Limited driving only, diagnose soon

How much does it cost to fix U12A7?

The estimated repair cost for U12A7 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat