AutoCodes - OBDII Code List - U0001 CADILLAC

U0001 CADILLAC - High Speed CAN Communication Bus Malfunction

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

U0001 CADILLAC 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 CADILLAC?

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.
How much do you know about cars?

Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge

Play Now

Tech Notes

Controller Area Network (CAN)

Cost of diagnosing the U0001 CADILLAC code

Labor: 1.0

The cost of diagnosing the U0001 CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

U0001 CADILLAC 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 Cadillac - High Speed CAN Communication Bus Malfunction - AutoCodes.com

More Information

Need more information on how to fix the U0001 CADILLAC code?
Get Access to Factory Service Manuals

Need more help?

Get the U0001 Cadillac code diagnosed by a professional: Find a repair shop in your area

Comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the U0001 Cadillac code? Have you replaced any parts?
Any information is appreciated. Thanks
Top ⇧
Repair Importance Level: 3
 
1=Low 2=Medium 3=High What is this?
Repair Difficulty Level: 3
 
1=Easy 2=Moderate 3=Hard What is this?