AutoCodes – Buick – U1017 Buick

U1017 Buick Code - Lost Communication With Engine Control Module

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module 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: U1017 Buick indicates Lost Communication With Engine Control Module.
Common causes: Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module 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 1,782

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1017 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) U1017 is set.

OBDII Code U1017 Buick - Lost Communication With Engine Control Module - AutoCodes.com — U1017 Buick Code - Lost Communication With Engine Control Module

What does this mean?

What are the Possible Causes of the DTC U1017 Buick?

Faulty Engine Control Module (ECM)
Engine Control Module harness is open or shorted
Engine Control Module circuit poor electrical connection

How to Fix the DTC U1017 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 U1017 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 U1017 Buick Code

1. What are the common symptoms of OBDII code U1017 Buick?

- Common symptoms include the check engine light illuminating, loss of power, stalling, and issues with the vehicle's performance.

2. What does the OBDII code U1017 Buick "Lost Communication With Engine Control Module" mean?

- This code indicates a communication problem between the vehicle's onboard computer system and the Engine Control Module (ECM).

3. What are some possible causes of OBDII code U1017 Buick?

- Possible causes include loose or damaged wiring connections, a faulty ECM, a short circuit, or a communication network issue within the vehicle.

4. How can I diagnose the root cause of OBDII code U1017 Buick?

- Diagnosing the issue typically involves checking the wiring connections, inspecting for any visible damage, testing the ECM, and using a diagnostic scanner to analyze communication signals.

5. Can I still drive my vehicle with OBDII code U1017 Buick present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage and potentially unsafe driving conditions.

6. How can I repair OBDII code U1017 Buick?

- Repairing this code involves addressing the underlying communication issue, which may require repairing or replacing wiring connections, repairing the ECM, or resolving any network communication problems.

7. Are there any DIY tips for fixing OBDII code U1017 Buick?

- DIY tips may include checking and securing wiring connections, inspecting for visible damage, and using a diagnostic scanner to reset the code after addressing any identified issues.

8. Can a mechanic help with diagnosing and repairing OBDII code U1017 Buick?

- Yes, a qualified mechanic can help diagnose and repair this code by conducting a thorough inspection, testing components, and performing necessary repairs to resolve the communication problem.

9. How much does it typically cost to fix OBDII code U1017 Buick?

- The cost of fixing this code can vary depending on the underlying issue, the parts required, and the labor involved. It is advisable to obtain a diagnosis and repair estimate from a trusted mechanic.

10. How can I prevent OBDII code U1017 Buick from occurring in the future?

- To prevent this code from occurring in the future, it is essential to maintain the vehicle's electrical system, address any wiring issues promptly, and perform regular maintenance to ensure the ECM functions properly.