AutoCodes – Infiniti – U1220 Infiniti

U1220 Infiniti Code - XM Serial Communication

Quick Answer

Integrates Hard Disk Drive (HDD) allowing map data and music data to be stored. Common causes include Faulty Audio and Video (AV) Control Unit, Audio and Video Control Unit harness is open or shorted, Audio and Video Control Unit 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: U1220 Infiniti indicates XM Serial Communication.
Common causes: Common causes include Faulty Audio and Video (AV) Control Unit, Audio and Video Control Unit harness is open or shorted, Audio and Video Control Unit 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 937

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 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1220 Infiniti Description

Integrates Hard Disk Drive (HDD) allowing map data and music data to be stored. It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to communication signals from the AV control unit. The AV control unit includes the audio, hands-free phone, voice control, navigation, and vehicle information functions. It is connected to ECM and combination meter via CAN communication to obtain necessary information for the vehicle information function.
The Diagnostic Trouble Code (DTC) sets when the Audio and Video (AV) Control Unit detects an internal malfunction of the Audio and Video (AV) Control Unit (satellite radio tuner communication malfunction).

OBDII Code U1220 Infiniti - XM Serial Communication - AutoCodes.com — U1220 Infiniti Code - XM Serial Communication

What does this mean?

What are the Possible Causes of the DTC U1220 Infiniti?

Faulty Audio and Video (AV) Control Unit
Audio and Video Control Unit harness is open or shorted
Audio and Video Control Unit circuit poor electrical connection

How to Fix the DTC U1220 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 U1220 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 U1220 Infiniti Code

1. What does the OBDII code U1220 mean on an Infiniti?

U1220 indicates a communication issue between the XM radio module and other control modules on the vehicle's network.

2. What are the common symptoms of the U1220 code in an Infiniti?

Symptoms may include the XM radio not working, loss of audio functionality, intermittent sound issues, or a check engine light.

3. What causes the U1220 code to appear on an Infiniti?

The code is typically caused by a faulty XM radio module, damaged wiring or connectors, or a problem within the vehicle's communication network.

4. Can a U1220 code affect vehicle performance?

No, this code is specific to the XM radio system and does not directly impact the vehicle's performance.

5. How do I diagnose the U1220 code on my Infiniti?

Start by checking the wiring and connectors for the XM module, ensuring thereâ€™s no damage or loose connections. Use a scan tool to verify module communication.

6. Can a weak car battery cause the U1220 code?

Yes, low voltage or a weak battery can disrupt communication between modules and trigger the U1220 code.

7. Is it safe to drive with the U1220 code on an Infiniti?

Yes, it is safe to drive as this code does not affect the vehicle's drivability, but the XM radio functionality may be limited.

8. How do I fix the U1220 code in an Infiniti?

Repair or replace damaged wiring, inspect and secure all connectors, and replace the XM radio module if it is found to be faulty.

9. Can updating the vehicle's software resolve the U1220 code?

In some cases, a software update for the vehicle's control modules may resolve communication issues and clear the code.

10. Do I need a professional to fix the U1220 code on my Infiniti?

If basic checks like inspecting wiring and connectors donâ€™t resolve the issue, itâ€™s best to consult a professional with the tools to diagnose communication problems.