AutoCodes – Buick – U007E Buick

U007E Buick Code - Control Module Communication FlexRay 1A Bus Off

Quick Answer

The devices connected to the object high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Check for more codes, Faulty Control Module, Control Module harness is open or shorted. 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
U007E Buick indicates Control Module Communication FlexRay 1A Bus Off.
Common causes
Common causes include Check for more codes, Faulty Control Module, Control Module harness is open or shorted.
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 232
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 20, 2023
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Code U007E Buick Description

The devices connected to the object high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices when the ignition switch is in any position other than OFF. The object high-speed GMLAN serial data bus uses terminating resistors that are in parallel with the object high-speed GMLAN (+) and (-) circuits. The Diagnostic Trouble Code (DTC) sets when a supervised periodic message that includes the transmitter device availability has not been received.
OBDII Code U007E Buick - Control Module Communication FlexRay 1A Bus Off - AutoCodes.com
U007E Buick Code - Control Module Communication FlexRay 1A Bus Off

What are the Possible Causes of the DTC U007E Buick?

  • Check for more codes
  • Faulty Control Module
  • Control Module harness is open or shorted
  • Control Module circuit poor electrical connection

How to Fix the DTC U007E 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 U007E 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.

Need more information about the U007E Buick code?

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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 U007E Buick Code

What does the OBDII code U007E mean for a Buick?

The U007E code indicates a communication failure on the FlexRay 1A Bus between control modules in the vehicle.

What are common symptoms of code U007E in a Buick?

Symptoms include warning lights on the dashboard, reduced functionality of certain systems, intermittent electrical issues, or loss of communication with one or more control modules.

What causes the U007E code to appear on a Buick?

This code can be caused by damaged wiring, a faulty control module, issues with the FlexRay network, or electrical interference disrupting communication.

Can a loose connection trigger the U007E code in a Buick?

Yes, a loose or corroded connector in the FlexRay communication circuit can result in a U007E code.

How can wiring issues lead to the U007E code?

Damaged or shorted wires in the FlexRay Bus can interrupt communication between control modules, triggering this code.

Can a faulty control module cause the U007E code?

Yes, if a control module on the FlexRay Bus is defective or not functioning properly, it can lead to the U007E code.

How is the U007E code diagnosed in a Buick?

Technicians use advanced diagnostic tools to check for communication errors, inspect wiring and connectors, and test control modules for faults.

Can the U007E code be cleared without repairs?

Clearing the code without addressing the underlying issue may cause it to return, as the communication fault will persist.

What repairs are typically needed for the U007E code in a Buick?

Repairs may involve fixing damaged wiring, replacing faulty control modules, or addressing connection issues in the FlexRay network.

Is it safe to drive a Buick with the U007E code?

Driving may be unsafe if the code affects critical systems, as it can lead to reduced functionality or unexpected behavior of the vehicle.

Discuss the causes and fixes for U007E Buick OBDII Code

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