AutoCodes – Infiniti – U1321 Infiniti

U1321 Infiniti Code - Automatic Back Door Control Module Configuration Error

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the configuration work of the Automatic Back Door Control Module has not been started. Common causes include Configuration work of Automatic Back Door Control Module, Faulty Automatic Back Door Control Module, Automatic Back Door Control Module harness is open or shorted. 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
U1321 Infiniti indicates Automatic Back Door Control Module Configuration Error.
Common causes
Common causes include Configuration work of Automatic Back Door Control Module, Faulty Automatic Back Door Control Module, Automatic Back Door Control Module harness is open or shorted.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 985
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 16, 2020
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Code U1321 Infiniti Description

The Diagnostic Trouble Code (DTC) sets when the configuration work of the Automatic Back Door Control Module has not been started.
OBDII Code U1321 Infiniti - Automatic Back Door Control Module Configuration Error - AutoCodes.com
U1321 Infiniti Code - Automatic Back Door Control Module Configuration Error

What are the Possible Causes of the DTC U1321 Infiniti?

  • Configuration work of Automatic Back Door Control Module
  • Faulty Automatic Back Door Control Module
  • Automatic Back Door Control Module harness is open or shorted
  • Automatic Back Door Control Module circuit poor electrical connection

How to Fix the DTC U1321 Infiniti?

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 U1321 Infiniti 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.

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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 U1321 Infiniti Code

1. What does the OBDII code U1321 mean on an Infiniti?

U1321 indicates an "Automatic Back Door Control Module Configuration Error," meaning there is an issue with the programming or communication of the back door control module.

2. What are the common symptoms of the U1321 code?

Symptoms may include the automatic back door not opening or closing properly, intermittent operation, or a complete failure of the back door system.

3. What causes the U1321 code to appear on an Infiniti?

The code can be caused by incorrect programming, a damaged or malfunctioning back door control module, wiring issues, or communication errors between control modules.

4. Can the U1321 code cause other problems in the vehicle?

While it primarily affects the back door system, unresolved communication errors could potentially interfere with other body control systems.

5. How do you diagnose the U1321 code on an Infiniti?

A technician will use a diagnostic scanner to check for related codes, inspect the wiring and connectors for damage, and verify the configuration settings of the back door control module.

6. Is the U1321 code likely related to a software issue?

Yes, this code often points to a software or configuration issue, which may require reprogramming or initializing the back door control module.

7. Can I fix the U1321 code myself?

If the issue is minor, such as a loose connector, you might fix it yourself. However, most cases require specialized tools to reprogram or reset the control module, so professional assistance is recommended.

8. How much does it cost to repair the U1321 code on an Infiniti?

Repair costs can range from $100 to $500, depending on whether the module needs reprogramming, repair, or replacement.

9. Does the U1321 code mean the back door control module needs replacement?

Not always. The module might just need reprogramming or resetting. However, if the module is physically damaged, replacement may be necessary.

10. How can I prevent the U1321 code from recurring?

Ensure all software updates are installed, avoid power surges during repairs, and regularly inspect the wiring and connectors for damage or corrosion.

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