AutoCodes - OBDII Code List - U0001 CHEVROLET

U0001 CHEVROLET - High Speed CAN Communication Bus Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

U0001 CHEVROLET 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 do I fix code U0001 CHEVROLET?

Check 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.
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Tech Notes

Controller Area Network (CAN)

Cost of diagnosing the U0001 CHEVROLET code

Labor: 1.0

The cost of diagnosing the U0001 CHEVROLET 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.

Possible Symptoms

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

U0001 CHEVROLET Description

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.
OBDII Code U0001 Chevrolet - High Speed CAN Communication Bus Malfunction -

More Information

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