Engine-Codes - Buick - U0001 BUICK

U0001 BUICK - High Speed CAN Communication Bus Malfunction

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

U0001 BUICK Possible Causes

  • Diagnosis of this Diagnostic Trouble Code (DTC) is accomplished via the vehicle symptom(s)
  • Check for more codes
  • Faulty Control Module
  • Control Module harness is open or shorted
  • Control Module circuit poor electrical connection

How is the U0001 BUICK 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.

Tech Notes

Controller Area Network (CAN)

What is the cost to diagnose the U0001 BUICK code

Labor: 1.0

The cost to diagnose the U0001 BUICK code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

U0001 BUICK Meaning

Devices connected to the General Motors Local Area Network (GMLAN) serial data circuits monitor for serial data communications on the GMLAN network during normal vehicle operation. Operating information and commands are exchanged among the devices. Each device on GMLAN network maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and will decrease with error-free messages. If the transmit error counter value exceeds 255 the device removes itself from the network and a Diagnostic Trouble Code (DTC) U0001 will be set.

More Information

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