AutoCodes – Generic – U12AC

U12AC Code - Display Temperature Too High

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Display Temperature has exceeded maximum temperature. Common causes include Faulty Audio and Video (AV) Control Unit, AV Control Unit harness is open or shorted, AV 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: U12AC indicates Display Temperature Too High.
Common causes: Common causes include Faulty Audio and Video (AV) Control Unit, AV Control Unit harness is open or shorted, AV 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 927

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 U12AC Description

The Diagnostic Trouble Code (DTC) sets when the Display Temperature has exceeded maximum temperature. The display is switched off to avoid irreversible damage.

OBDII Code U12AC - Display Temperature Too High - AutoCodes.com — U12AC Code - Display Temperature Too High

What does this mean?

What are the Possible Causes of the DTC U12AC?

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

How to Fix the DTC U12AC?

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 U12AC 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 U12AC code?

Need more information on how to fix the U12AC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U12AC code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U12AC Infiniti — Display Temperature Too High
U12AC Nissan — Display Temperature Too High

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 U12AC Code

1. Q: What are the common symptoms of OBDII code U12AC (Display Temperature Too High)?

A: Common symptoms include inaccurate temperature readings on the display, overheating warnings, or issues with the vehicle's climate control system.

2. Q: What are the possible causes of OBDII code U12AC (Display Temperature Too High)?

A: The code U12AC can be triggered by a faulty temperature sensor, a wiring issue, a failed control module, or a malfunction in the display unit.

3. Q: How can I diagnose the OBDII code U12AC on my vehicle?

A: To diagnose U12AC, use an OBDII scanner to retrieve the code, check the temperature sensor's readings, inspect the wiring for any damage, and test the control module functionality.

4. Q: Can I continue driving my vehicle with the U12AC code (Display Temperature Too High) present?

A: It is not recommended to drive with the U12AC code active, as it can lead to inaccurate temperature readings and potential issues with the vehicle's cooling system.

5. Q: How can I repair OBDII code U12AC (Display Temperature Too High) on my own?

A: Depending on the exact cause, repairing U12AC may involve replacing the temperature sensor, repairing damaged wiring, resetting the control module, or recalibrating the display unit.

6. Q: Is it necessary to reset the OBDII code U12AC (Display Temperature Too High) after repairs?

A: Yes, it is important to clear the U12AC code using an OBDII scanner after completing any repairs to ensure the issue has been resolved and the warning light is reset.

7. Q: Can extreme weather conditions trigger the OBDII code U12AC (Display Temperature Too High)?

A: Yes, extreme heat or cold can sometimes cause temperature sensors to malfunction, leading to the triggering of code U12AC.

8. Q: How much does it typically cost to repair OBDII code U12AC (Display Temperature Too High) at a mechanic or dealership?

A: The cost of repairing U12AC can vary depending on the exact issue, but it may range from $100 to $500, including parts and labor.

9. Q: Are there any preventive measures to avoid the recurrence of OBDII code U12AC (Display Temperature Too High)?

A: Regularly inspecting the temperature sensors, maintaining proper climate control system functionality, and addressing any warning signs promptly can help prevent the reoccurrence of U12AC.

10. Q: Can a DIY enthusiast with basic automotive knowledge fix the OBDII code U12AC (Display Temperature Too High) issue?

A: Depending on the cause, a DIY enthusiast with basic automotive knowledge may be able to fix U12AC by following repair guides, using the right tools, and taking necessary precautions.