AutoCodes – Buick – U0159 Buick

U0159 Buick Code - Lost Communication With Parking Assist Control Module

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Parking Assist Control Module, Parking Assist Control Module harness is open or shorted, Parking Assist 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: U0159 Buick indicates Lost Communication With Parking Assist Control Module.
Common causes: Common causes include Faulty Parking Assist Control Module, Parking Assist Control Module harness is open or shorted, Parking Assist 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,204

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 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U0159 Buick Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Parking Assist Control Module has not been received.

OBDII Code U0159 Buick - Lost Communication With Parking Assist Control Module - AutoCodes.com — U0159 Buick Code - Lost Communication With Parking Assist Control Module

What does this mean?

What are the Possible Causes of the DTC U0159 Buick?

Faulty Parking Assist Control Module
Parking Assist Control Module harness is open or shorted
Parking Assist Control Module circuit poor electrical connection

How to Fix the DTC U0159 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 U0159 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.

Need more information about the U0159 Buick code?

Need more information on how to fix the U0159 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0159 Buick code diagnosed by a professional: Find a repair shop in your area

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 U0159 Buick Code

1. What does the OBDII code U0159 mean on a Buick?

The U0159 code indicates that the vehicle has lost communication with the Parking Assist Control Module, which manages parking sensors and related systems.

2. What are common symptoms of the U0159 code in a Buick?

Symptoms may include inoperative parking sensors, warnings on the dashboard, and possible errors related to parking assist not working.

3. What causes the U0159 code on a Buick?

Common causes include faulty wiring, a damaged Parking Assist Control Module, a blown fuse, or issues with the CAN (Controller Area Network) communication system.

4. Can a weak battery cause the U0159 code in a Buick?

Yes, a weak or failing battery can disrupt the electrical system and lead to communication errors like U0159.

5. How can I troubleshoot the U0159 code on my Buick?

Start by inspecting the wiring and connectors to the Parking Assist Control Module for damage or corrosion. Check fuses and scan the system for other related codes.

6. Is the Parking Assist Control Module always faulty when the U0159 code appears?

No, the module itself is not always the issue. The problem could stem from wiring, a CAN bus communication fault, or power supply issues.

7. Can I still drive my Buick with the U0159 code?

Yes, the vehicle is typically drivable, but parking assist features may not function correctly, which could affect parking safety.

8. How much does it cost to repair the U0159 code on a Buick?

Repair costs vary depending on the issue, ranging from $50 for a simple wiring repair to over $500 if the Parking Assist Control Module needs replacement.

9. Can clearing the U0159 code fix the problem?

Clearing the code may temporarily remove the warning, but if the underlying issue isnâ€™t resolved, the code will reappear.

10. Does the U0159 code require professional repair?

While basic checks like inspecting fuses and connectors can be done at home, diagnosing CAN bus or module issues may require professional tools and expertise.