AutoCodes – Infiniti – U12AB Infiniti

U12AB Infiniti Code - FM Antenna Error

Quick Answer

The Diagnostic Trouble Code (DTC) sets when an open or short to ground is detected in AM-FM antenna connection. Common causes include Faulty AM-FM Antenna, AM-FM Antenna harness is open or shorted, AM-FM Antenna 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: U12AB Infiniti indicates FM Antenna Error.
Common causes: Common causes include Faulty AM-FM Antenna, AM-FM Antenna harness is open or shorted, AM-FM Antenna 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 1,159

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 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U12AB Infiniti Description

The Diagnostic Trouble Code (DTC) sets when an open or short to ground is detected in AM-FM antenna connection.

OBDII Code U12AB Infiniti - FM Antenna Error - AutoCodes.com — U12AB Infiniti Code - FM Antenna Error

What does this mean?

What are the Possible Causes of the DTC U12AB Infiniti?

Faulty AM-FM Antenna
AM-FM Antenna harness is open or shorted
AM-FM Antenna circuit poor electrical connection

How to Fix the DTC U12AB 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 U12AB 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 U12AB Infiniti Code

1. What are the common symptoms of the OBDII code U12AB (FM Antenna Error) in an Infiniti?

- Common symptoms include poor radio reception, static or distorted sound, and difficulty tuning into FM radio stations.

2. What are the possible causes of the U12AB code in an Infiniti?

- The U12AB code typically indicates a fault with the FM antenna system, which can be caused by a damaged antenna, loose connections, or a faulty antenna amplifier.

3. How can I diagnose the U12AB FM Antenna Error code in my Infiniti?

- To diagnose the U12AB code, check the condition of the FM antenna, inspect all connections for looseness or corrosion, and test the antenna amplifier for proper functionality.

4. Can I repair the U12AB code issue in my Infiniti myself?

- Basic repairs such as checking and tightening connections or replacing a damaged antenna may be DIY-friendly. However, diagnosing and repairing faults within the antenna amplifier may require professional assistance.

5. Is it safe to continue driving my Infiniti with the U12AB code present?

- It is generally safe to drive the vehicle with the U12AB code related to the FM antenna error, as it primarily affects the radio reception and does not impact the vehicle's drivability or safety.

6. How much does it typically cost to repair the U12AB FM Antenna Error in an Infiniti?

- The cost of repairing the U12AB code can vary depending on the specific issue causing the fault. Simple repairs like replacing the antenna may be relatively inexpensive, while repairing or replacing the antenna amplifier can be more costly.

7. Can a faulty FM antenna affect other electronic systems in my Infiniti?

- While the U12AB code specifically relates to the FM antenna system, a faulty antenna or amplifier may impact the performance of other electronic systems that rely on radio frequency signals, such as the GPS or entertainment system.

8. Will resetting the OBDII code U12AB clear the FM Antenna Error in my Infiniti?

- Resetting the U12AB code may temporarily clear the error from the system, but if the underlying issue with the FM antenna system is not addressed, the code is likely to reappear.

9. How long does it typically take to repair the U12AB FM Antenna Error in an Infiniti?

- The repair time for the U12AB code can vary depending on the specific issue and the availability of replacement parts. Simple repairs may take a few hours, while more complex issues could require a day or more.

10. Can extreme weather conditions contribute to the U12AB code appearing in an Infiniti?

- Yes, extreme weather conditions such as heavy rain, snow, or prolonged exposure to sunlight can potentially damage the FM antenna or its components, leading to the U12AB FM Antenna Error in an Infiniti.