Engine-Codes - Cadillac - U18AE CADILLAC

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

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U18AE CADILLAC Possible Causes

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

How is the U18AE CADILLAC code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the U18AE CADILLAC code

Labor: 1.0

The cost to diagnose the U18AE CADILLAC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)


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.

More Information

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