AutoCodes – Buick – U18AE Buick

U18AE Buick 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 Buick 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 646
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 08, 2020
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Code U18AE Buick 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 Buick - Lost Communication With Infotainment Control Touchpad On Dedicated Bus 1 - AutoCodes.com
U18AE Buick Code - Lost Communication With Infotainment Control Touchpad On Dedicated Bus 1

What are the Possible Causes of the DTC U18AE Buick?

  • 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 Buick?

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 Buick 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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Need Help with the Code?

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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 U18AE Buick Code

What does the OBDII code U18AE indicate for my Buick?

The code U18AE indicates a loss of communication with the infotainment control touchpad on Dedicated Bus 1, suggesting a problem in the communication network related to the infotainment system.

What symptoms might I experience with the U18AE code?

Common symptoms include malfunctioning infotainment features, unresponsive touchpad, or a complete failure of the infotainment system.

What causes the U18AE code to trigger?

Possible causes include a faulty infotainment control module, damaged wiring or connectors, or issues with the vehicle's communication network.

How can I diagnose the U18AE code?

Start by checking the wiring and connectors for any visible damage, then use a diagnostic scanner to read other related codes that may provide additional context.

What are some repair tips for fixing the U18AE code?

Inspect and repair any damaged wiring or connectors, reset the infotainment system, or replace the infotainment control module if necessary.

Can I reset the U18AE code myself?

Yes, you can use an OBDII scanner to clear the code, but if the underlying issue is not resolved, the code may return.

Is the U18AE code serious?

While it may not affect the vehicle's drivability, it can lead to a loss of important infotainment features, which can be inconvenient.

Should I consult a professional mechanic for the U18AE code?

If you're unable to diagnose or fix the issue yourself, it's advisable to seek help from a qualified mechanic to ensure proper repairs.

Will disconnecting the battery clear the U18AE code?

Disconnecting the battery may reset the infotainment system, but it will not fix the underlying communication issue that caused the code to appear.

Discuss the causes and fixes for U18AE Buick OBDII Code

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