AutoCodes - Buick - U1193 BUICK

U1193 BUICK Code - Loss Of Vehicle Immobilizer Module Communications

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

|U1193 BUICK code possible causes

  • Faulty Vehicle Immobilizer Module
  • Vehicle Immobilizer Module harness is open or shorted
  • Vehicle Immobilizer Module circuit poor electrical connection

|How do I fix the U1193 BUICK code?

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.

|Cost of diagnosing the U1193 BUICK code

Labor: 1.0

The cost of diagnosing the U1193 BUICK 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.

|What are U1193 BUICK code possible symptoms?

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

|U1193 BUICK code description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for the state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an identification number is learned by a module, it will monitor for that module node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1193 is set.
OBDII Code U1193 Buick - Loss Of Vehicle Immobilizer Module Communications -

|Need more information with the U1193 BUICK code?

Need more information on how to fix the U1193 BUICK code? Get Access to Factory Service Manuals

|Need help with a U1193 BUICK code?

Get the U1193 Buick code diagnosed by a professional: Find a repair shop in your area

|U1193 BUICK code comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the U1193 Buick 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?