Engine-Codes - Generic - U18C5

U18C5 - Lost Communication With Electronic Brake Control Module On High Speed CAN Bus

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

U18C5 Possible Causes

  • Faulty Electronic Brake Control Module (EBCM)
  • Electronic Brake Control Module harness is open or shorted
  • Electronic Brake Control Module circuit poor electrical connection

How is the U18C5 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 U18C5 code

Labor: 1.0

The cost to diagnose the U18C5 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)

U18C5 Meaning

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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Information for specific makes

  • U18C5 BUICK Lost Communication With Electronic Brake Control Module On High Speed CAN Bus
  • U18C5 CADILLAC Lost Communication With Electronic Brake Control Module On High Speed CAN Bus
  • U18C5 CHEVROLET Lost Communication With Electronic Brake Control Module On High Speed CAN Bus
  • U18C5 GMC Lost Communication With Electronic Brake Control Module On High Speed CAN Bus

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