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U1097 Buick Code - Loss Of Driver Information Center Communications

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Driver Information Center (DIC), Driver Information Center harness is open or shorted, Driver Information Center circuit poor electrical connection. 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
U1097 Buick indicates Loss Of Driver Information Center Communications.
Common causes
Common causes include Faulty Driver Information Center (DIC), Driver Information Center harness is open or shorted, Driver Information Center circuit poor electrical connection.
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.
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Code Popularity 485
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Apr 24, 2020
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Code U1097 Buick 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) U1097 is set.
OBDII Code U1097 Buick - Loss Of Driver Information Center Communications - AutoCodes.com
U1097 Buick Code - Loss Of Driver Information Center Communications
What does this mean?

What are the Possible Causes of the DTC U1097 Buick?

  • Faulty Driver Information Center (DIC)
  • Driver Information Center harness is open or shorted
  • Driver Information Center circuit poor electrical connection

How to Fix the DTC U1097 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 U1097 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.

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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 U1097 Buick Code

1. What does OBDII code U1097 mean on a Buick?

Code U1097 indicates a loss of communication with the Driver Information Center (DIC), which is a module responsible for displaying vehicle data.

2. What are the symptoms of code U1097 in a Buick?

Common symptoms include the Driver Information Center not functioning, blank or intermittent displays, and possible warning lights on the dashboard.

3. What causes the U1097 code in a Buick?

This code is usually caused by a faulty DIC module, wiring issues such as damaged or corroded connections, or a failure in the communication network.

4. Can I drive my Buick with a U1097 code?

Yes, you can generally still drive the vehicle, but you may not have access to important vehicle information such as fuel economy or warning messages.

5. How do I diagnose a U1097 code in a Buick?

Start by inspecting the wiring and connectors to the DIC module for damage or corrosion. Use a diagnostic scanner to check for communication with the module and verify related codes.

6. How do I fix code U1097 in a Buick?

Repairs may include cleaning or repairing wiring connections, replacing the DIC module, or addressing issues with the vehicle’s communication network.

7. What tools are needed to troubleshoot the U1097 code?

You’ll need a diagnostic scanner capable of reading U-codes, a multimeter to test circuits, and possibly wiring diagrams for your specific Buick model.

8. Could a dead battery cause the U1097 code?

Yes, a dead or weak battery could disrupt communication between modules and trigger the U1097 code. Ensure the battery and charging system are functioning properly.

9. Is the U1097 code specific to Buick vehicles?

While U1097 is a generic communication code, its exact meaning and symptoms are tailored to Buick’s use of the Driver Information Center module.

10. How much does it cost to fix a U1097 code in a Buick?

Repair costs can vary widely, ranging from $50 to clean and repair wiring to $500 or more if the DIC module needs replacement.

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