AutoCodes – Generic – U12A7

U12A7 Code - Lost Communication With Display Screen Module

Quick Answer

The Diagnostic Trouble Code (DTC) sets when there is a lost communication with Display Screen Module. Common causes include Faulty Display Screen Module, Display Screen Module harness is open or shorted, Display Screen Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U12A7 indicates Lost Communication With Display Screen Module.
Common causes: Common causes include Faulty Display Screen Module, Display Screen Module harness is open or shorted, Display Screen Module circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 3,723

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U12A7 Description

The Diagnostic Trouble Code (DTC) sets when there is a lost communication with Display Screen Module.

OBDII Code U12A7 - Lost Communication With Display Screen Module - AutoCodes.com — U12A7 Code - Lost Communication With Display Screen Module

What does this mean?

What are the Possible Causes of the DTC U12A7?

Faulty Display Screen Module
Display Screen Module harness is open or shorted
Display Screen Module circuit poor electrical connection

How to Fix the DTC U12A7?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U12A7 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U12A7 code?

Need more information on how to fix the U12A7 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U12A7 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U12A7 Chrysler — Lost Communication With Display Screen Module
U12A7 Dodge — Lost Communication With Display Screen Module
U12A7 Jeep — Lost Communication With Display Screen Module
U12A7 RAM — Lost Communication With Display Screen Module

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U12A7 Code

1. What does OBDII code U12A7 mean?

Code U12A7 indicates a loss of communication between the vehicle's main control modules and the display screen module, often responsible for infotainment or navigation functions.

2. What are the symptoms of code U12A7?

Common symptoms include a blank or unresponsive display screen, loss of infotainment functions, and possibly errors in navigation or audio system performance.

3. What causes code U12A7?

Possible causes include a faulty display screen module, damaged wiring or connectors, software glitches, or issues with the communication network.

4. Can a dead battery trigger code U12A7?

Yes, a weak or dead battery can disrupt communication between modules, potentially triggering this code.

5. How can I diagnose code U12A7?

Start by inspecting the wiring and connectors to the display screen module, checking for damage or loose connections. Use a diagnostic scanner to verify module communication and look for related codes.

6. Is code U12A7 related to other codes?

It may appear alongside other communication-related codes, such as those indicating issues with CAN bus systems or specific modules.

7. Can I still drive my car with code U12A7?

Yes, but certain infotainment functions may be unavailable, which can affect convenience and usability.

8. How do I fix code U12A7?

Repairs may involve reconnecting or replacing damaged wiring, updating software, or replacing the display screen module if it's defective.

9. Is a software update a possible solution for code U12A7?

Yes, outdated or corrupted software can cause communication issues, and updating the vehicle's firmware may resolve the problem.

10. Should I take my car to a mechanic for code U12A7?

If basic troubleshooting doesnâ€™t resolve the issue, consult a qualified technician, as diagnosing communication errors often requires specialized tools and expertise.