AutoCodes – Generic – U18AE

U18AE Code - Lost Communication With Infotainment Control Touchpad On Dedicated Bus 1

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Infotainment Control Touchpad, Infotainment Control Touchpad harness is open or shorted, Infotainment Control Touchpad 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: U18AE indicates Lost Communication With Infotainment Control Touchpad On Dedicated Bus 1.
Common causes: Common causes include Faulty Infotainment Control Touchpad, Infotainment Control Touchpad harness is open or shorted, Infotainment Control Touchpad 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 730

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 Jun 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U18AE Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. The Diagnostic Trouble Code (DTC) will set a supervised periodic message that includes the transmitter device availability that has not been received.

OBDII Code U18AE - Lost Communication With Infotainment Control Touchpad On Dedicated Bus 1 - AutoCodes.com — U18AE Code - Lost Communication With Infotainment Control Touchpad On Dedicated Bus 1

What does this mean?

What are the Possible Causes of the DTC U18AE?

Faulty Infotainment Control Touchpad
Infotainment Control Touchpad harness is open or shorted
Infotainment Control Touchpad circuit poor electrical connection

How to Fix the DTC U18AE?

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 U18AE 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 U18AE code?

Need more information on how to fix the U18AE code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U18AE code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U18AE Buick — Lost Communication With Infotainment Control Touchpad On Dedicated Bus 1
U18AE Cadillac — Lost Communication With Infotainment Control Touchpad On Dedicated Bus 1
U18AE Chevrolet — Lost Communication With Infotainment Control Touchpad On Dedicated Bus 1
U18AE GMC — Lost Communication With Infotainment Control Touchpad On Dedicated Bus 1

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 U18AE Code

1. What are the common symptoms of OBDII code U18AE?

- Common symptoms include the infotainment control touchpad not responding, issues with the audio system, and loss of communication with the infotainment display.

2. What can cause the OBDII code U18AE to trigger?

- The code U18AE is triggered when there is a loss of communication between the infotainment control touchpad and the dedicated bus 1 network.

3. How can I diagnose the OBDII code U18AE?

- Diagnosis involves checking the wiring harness, connectors, and modules related to the infotainment control touchpad for any signs of damage or loose connections.

4. Can a faulty infotainment control touchpad cause the OBDII code U18AE?

- Yes, a faulty infotainment control touchpad or a malfunctioning module connected to it can be the root cause of the U18AE trouble code.

5. What are some possible repair tips for OBDII code U18AE?

- Repair tips include checking and repairing any damaged wiring, ensuring proper connections, resetting the infotainment system, and replacing faulty components if necessary.

6. Is it safe to continue driving with the OBDII code U18AE present?

- It is generally safe to drive with this code, but it is recommended to address the underlying issue promptly to prevent further problems with the infotainment system.

7. Can a software update fix the OBDII code U18AE?

- In some cases, a software update for the infotainment system may resolve communication issues and clear the U18AE trouble code.

8. How much does it typically cost to repair OBDII code U18AE?

- The cost of repair can vary depending on the extent of the issue, but it may involve labor costs for diagnosis and potential replacement of components, which can range from $100 to $500 or more.

9. Will disconnecting the battery reset the OBDII code U18AE?

- Disconnecting the battery may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to reappear once the system detects the problem again.

10. Can I fix the OBDII code U18AE on my own, or should I consult a professional?

- While some simple checks and repairs can be done by DIY enthusiasts, it is recommended to consult a professional technician for a proper diagnosis and repair of the U18AE trouble code to ensure it is fixed correctly.